The Poultry Keeper

Author by : Anonim
Languange : en
Publisher by : Unknown
Format Available : PDF, ePub, Mobi
Total Read : 20
Total Download : 328
File Size : 43,7 Mb
GET BOOK

Description :


The Poultry Keeper S Text Book

Author by : Edward Thomas Brown
Languange : en
Publisher by : Unknown
Format Available : PDF, ePub, Mobi
Total Read : 25
Total Download : 550
File Size : 45,7 Mb
GET BOOK

Description :


The Poultry Keeper S Text Book

Author by : E. Brown
Languange : en
Publisher by : Whitaker Press
Format Available : PDF, ePub, Mobi
Total Read : 81
Total Download : 984
File Size : 55,6 Mb
GET BOOK

Description : This early work on poultry husbandry is a fascinating read for any poultry enthusiast, but also contains much information that is still useful and practical today. It will prove of much interest to the amateur poultry keeper as well as those in the field of agriculture. With 75 Illustrations and Large-scale Diagrammatic Plans. Contents Include: Origin of Breeds; Classification of Breeds; Breeding; Systems of Poultry-Keeping; Housing; Feeding; Hatching; Rearing; Day-old Chicks and Conveyance of Live Poultry; The Egg Trade; Fattening; Marketing Table Poultry; Ducks, Geese and Turkeys; General Information-Artificial Lighting for Laying Houses, Etc.; Diseases; Soils Characteristics and Land Drainage; Measuring Land; Poultry Manure; Weights and Measures; Glossary of Terms; Agricultural Colleges and Farms; and Index. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.


Egg Incubation For The Poultry Keeper A Collection Of Articles On The Methods And Equipment Of Natural And Artificial Incubation

Author by : Various
Languange : en
Publisher by : Read Books Ltd
Format Available : PDF, ePub, Mobi
Total Read : 41
Total Download : 394
File Size : 55,8 Mb
GET BOOK

Description : "Egg Incubation for the Poultry Keeper" is a complete guide for poultry keepers, containing information on the methods, equipment, general management, housing, health and ailments, and much more. It is intended to illustrate the main aspects of egg incubation and serves as a guide for anyone wishing to obtain a general knowledge of the subject and understand the field in its historical context. With simple instructions and a wealth of invaluable information, “Egg Incubation for the Poultry Keeper" is highly recommended for farmers and amateur poultry keepers alike. Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now in an affordable, modern, high-quality edition complete with a specially-commissioned new introduction on poultry farming.


The Poultry Keeper Vol 40

Author by : A. Otis Arnold
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 84
Total Download : 168
File Size : 55,6 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, Vol. 40: A Journal for Every One Interested in Making Poultry Pay, Devoted Particularly to Practical Poultry Keeping; April, 1923 This question is usually answered in a way which is very misleading. It is a fact that one will require more land than is usually given as an es timate. It is a mistake to crowd the fowls and we recommend that one buy more land than he thinks he will need. We believe that 100 hens is enough for one acre of land. We know this is much less to the acre than is usually estimated but we be lieve that in the end it will give bet ter results. We have seen 200 hens kept on an acre with good results but we believe that a smaller number will be safer. We would divide the acre into equal plots and rotate the chickens from one to the other. This would keep the ground in good con dition. It means more work to use more ground but it also means bet ter health for the flock. We would say that ten acres for layers and breeding stock would be sufficient land. We recommend an orchard for growing stock. Five acres should easily grow all the stock one would need to keep up the flock. One must figure in a garden and other extras so that perhaps fifteen acres would be about as small a place as one would want to try and get along with and twenty acres would be bet ter. The question which now arises is whether it would be better to do general farming or specialize. Fruit and poultry go together very well but general farming requires too much capital and at present does not pay especially well. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Poultry Keeper Vol 4

Author by : P. H. Jacobs
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 65
Total Download : 741
File Size : 52,7 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, Vol. 4: From April 1887 to March 1888 We Sell Nothing g. What an Egg Will Do.. Whata -new Conveit Did. What Does it Amount To s. What I Have Done and How What Made Your Papei Late. What 0111 Bacnumbers Contain What Shall I Do. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Poultry Keeper Vol 19

Author by : Anonim
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 35
Total Download : 450
File Size : 49,8 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, Vol. 19: A Journal for Every One Interested in Making Poultry Pay, Devoted Particularly to Practical Poultry Keeping; 1902-1903 A liberal supply of grit is of course nec essary both to the proprietor and to his birds; this is best when born and bred in the former; it can be supplied to the latter as they require it. Manufactured poultry grit or crushed stone is superior to coarse gravel both in composition and sharpness. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Poultry Keeper S Manual Etc

Author by : Poultry-Keeper
Languange : en
Publisher by : Unknown
Format Available : PDF, ePub, Mobi
Total Read : 90
Total Download : 371
File Size : 48,6 Mb
GET BOOK

Description :


Poultry Book A Guide For Big Or Small Poultry Keepers Beginners And Farmers

Author by : Harry Roberts
Languange : en
Publisher by : Read Books Ltd
Format Available : PDF, ePub, Mobi
Total Read : 83
Total Download : 301
File Size : 54,5 Mb
GET BOOK

Description : Originally published in the early 1930s, this extremely scarce early work on poultry keeping is both expensive and hard to find in its first edition. We are now republishing it, using the original text and photographs. Two hundred and thirty three pages deal with every aspect of poultry keeping from egg to table, and will prove invaluable to both the backyard beginner and the larger commercial enterprise. Twenty detailed chapters contain much expert advise on: The Beginner; Breeds and Strains; Houses and Appliances; Foods and Feeding; Hatching; Rearing; Backyard Poultry Keeping; Intensive Poultry Keeping; Winter Egg Production; Day Old Chicks; Ducks; Turkeys; Geese; Guinea Fowls; Diseases of Poultry; Vermin; Egg Preserving; Killing and Shaping; Plucking, Drawing, Trussing; Marketing; Accounts. Etc. The book is well illustrated with photos of breeds and equipment. This is a fascinating read for any poultry enthusiast, and contains much information that is still useful and practical today. Many of the early farming books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.


The Poultry Keeper S Text Book

Author by : E. T. Brown
Languange : en
Publisher by : Unknown
Format Available : PDF, ePub, Mobi
Total Read : 57
Total Download : 622
File Size : 48,5 Mb
GET BOOK

Description :


The Poultry Keeper S Companion

Author by : Johnson T
Languange : en
Publisher by : Hardpress Publishing
Format Available : PDF, ePub, Mobi
Total Read : 37
Total Download : 864
File Size : 47,6 Mb
GET BOOK

Description : Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.


The Poultry Keeper 1905 1906 Vol 22

Author by : F. Piggott
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 80
Total Download : 134
File Size : 45,7 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, 1905-1906, Vol. 22: A Journal for Every One Interested in Making Poultry Pay, Devoted Particularly to Practical Poultry Keeping Our Boiled Down Catalogue tells gm what you want to know, simply and in the fewest possible words. It is atime saver. We send it free. Write to-day. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Practical Poultry Keeper

Author by : L. Wright
Languange : en
Publisher by : BoD – Books on Demand
Format Available : PDF, ePub, Mobi
Total Read : 87
Total Download : 598
File Size : 44,7 Mb
GET BOOK

Description : Reprint of the original, first published in 1869.


The Poultry Keeper Vol 32

Author by : F. Piggott
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 73
Total Download : 252
File Size : 54,6 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, Vol. 32: A Journal for Every One Interested in Making Poultry Pay, Devoted Particularly to Practical Poultry Keeping; April, 1915 It is not only essential that eggs for hatching be handled in a manner that will insure a goodly percentage of them hatching, but the vitality of the chicks will be very largely determined by the strength of the germ from which they are produced. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Poultry Keeper

Author by : Anonim
Languange : en
Publisher by : Unknown
Format Available : PDF, ePub, Mobi
Total Read : 29
Total Download : 216
File Size : 51,5 Mb
GET BOOK

Description :


The Poultry Keeper Vol 25

Author by : F. Piggott
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 37
Total Download : 231
File Size : 43,7 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, Vol. 25: A Journal for Every One Interested in Making Poultry Pay; Devoted Particularly to Practical Poultry Keeping; June, 1908 These two_ farms will be sold together or separately as de sired by bidder. Fifty per cent of purchase price may remain on mortgage if desired by purchasers These farms Operated together as one place are not only self -supporting, but have netted the owner a substantial profit during the recent years. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Poultry Keeper 1922 1923 Vol 39

Author by : A. Otis Arnold
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 82
Total Download : 646
File Size : 41,8 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, 1922-1923, Vol. 39: A Journal for Every One Interested in Making Poultry Pay; Devoted Particularly to Practical Poultry Keeping Have heen'o'n the Market 'for 12 years and are Used and Recommended. By Thousands of Poultrymen_ and Experiment Poultry Farms. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Poultry Keeper Vol 24

Author by : Anonim
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 48
Total Download : 716
File Size : 46,5 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, Vol. 24: A Journal for Every One Interested in Making Poultry Pay; Devoted Particularly to Practical Poultry Keeping; April, 1907 January, 341; February, 397; March, 674; April, 670; May, 606, June, 478; July, 596; August, 493; September, 423; October, 263; November, 170; Decem ber, 122; total, Sold eggs, 4157-12 dozens, sold poultry for total, paid for feed, balance. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Practical Poultry Keeper

Author by : Lewis Wright
Languange : en
Publisher by : Unknown
Format Available : PDF, ePub, Mobi
Total Read : 19
Total Download : 336
File Size : 53,8 Mb
GET BOOK

Description : The Practical Poultry Keeper - A Complete and Standard Guide to the Management of Poultry. Fourth Edition is an unchanged, high-quality reprint of the original edition of 1869. Hansebooks is editor of the literature on different topic areas such as research and science, travel and expeditions, cooking and nutrition, medicine, and other genres. As a publisher we focus on the preservation of historical literature. Many works of historical writers and scientists are available today as antiques only. Hansebooks newly publishes these books and contributes to the preservation of literature which has become rare and historical knowledge for the future.


The Poultry Keeper Vol 53

Author by : Anonim
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 55
Total Download : 508
File Size : 42,7 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, Vol. 53: A Journal for Everybody Interested in Making Poultry Pay; April, 1937-March, 1938 Peat does not soil easily, hence need net be replaced for long periods. The replacement costs are very low. We have frequently been surprised at the length of time that peat could be used. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Poultry Keeper Vol 26

Author by : F. Piggott
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 66
Total Download : 921
File Size : 54,8 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, Vol. 26: A Journal for Every One Interested in Making Poultry Pay, Devoted Particularly to Practical Poultry Keeping; May, 1909 I read Poultry Keeper with a great deal of interest, and find many help ful things in it. It does me good to read the experiences of others for we see that others have had trials and failures as well as ourselves some times. But let us preserve and profit this year by the failures of last. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Poultry Keeper Vol 35

Author by : A. Otis Arnold
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 77
Total Download : 396
File Size : 46,6 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, Vol. 35: A Journal for Every One Interested in Making Poultry Pay; April, 1918 As a matter of fact, it is no longer necessary to provide green food in order to make hens lay and to keep the youngsters growing. A mineral substitute is now on the market which effectually takes the place of green food. Indeed. Many consider it superior to green food more economical and convenient. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Poultry Keeper Vol 29

Author by : F. Piggott
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 94
Total Download : 650
File Size : 41,7 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, Vol. 29: A Journal for Everyone Interested in Making Poultry Pay; Devoted Particularly to Practical Poultry Keeping; April, 1912 At night or in the evening about one hour before dusk they are fed quarts of corn, either cracked or whole, in the litter. All grains are fed 'warm, not hot. No wet mashes are ever fed. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Poultry Keeper S Manual

Author by : Poultry Chronicle
Languange : en
Publisher by : Createspace Independent Publishing Platform
Format Available : PDF, ePub, Mobi
Total Read : 60
Total Download : 545
File Size : 50,8 Mb
GET BOOK

Description : This special re-print edition of the Poultry Chronicle's book "The Poultry Keeper's Manual" is a complete guide to raising chickens for eggs and meat. Written in 1876, this classic English text on poultry contains the basics of raising poultry, be it for eggs, for meat purposes or for pleasure. Included are all the basic elements of breed selection, coops and other forms of housing, how to hatch eggs, care of young chicks and much more. Some of the topics covered include The Selection of Breeding Stock, Keeping Poultry in a Confined Space, The Poultry Yard and Its Fittings, Management of Sitting Hens, Treatment in the Winter, Poultry Fattening for Meat Purposes, Poultry Exhibitions, Killing and Dressing Poultry, Preserving Eggs, Different Breeds of Poultry and much more. Note: This edition is a perfect facsimile of the original edition and is not set in a modern typeface. As a result, some type characters and images might suffer from slight imperfections or minor shadows in the page background.


The Poultry Keeper S Account Book

Author by : R. W. Thompson (Author of The poultry keeper's account book.)
Languange : en
Publisher by : Unknown
Format Available : PDF, ePub, Mobi
Total Read : 42
Total Download : 380
File Size : 53,6 Mb
GET BOOK

Description :


The Poultry Keeper Vol 18

Author by : P. H. Jacobs
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 22
Total Download : 722
File Size : 47,9 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, Vol. 18: April 15, 1901 If you Wish to kill hawks, set small steel traps on the carcass of a chicken. Do not set the carcass on the trap. A hawk always catches hold of food with its feet and not with its beak. _this I learned by having a pet hawk. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Poultry Keeper 1938 1939 Vol 54

Author by : Anonim
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 95
Total Download : 560
File Size : 45,6 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, 1938-1939, Vol. 54: A Journal for Everybody Interested in Making Poultry Pay Magazines a books - Farm. Stock. Small Animal. Land and Waterfowl. Bird. Bee keeping. Etc. Big list and circulars free. 1938 Magazine Catalog for stamp. Couch Agency. Ithaca. N. Y. Bees - good side line. Pleasure. Profit. Send for 190 page book. First Lessons in Beekeeping. And one year subscription. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


The Poultry Keeper Vol 1

Author by : P. H. Jacobs
Languange : en
Publisher by : Forgotten Books
Format Available : PDF, ePub, Mobi
Total Read : 56
Total Download : 339
File Size : 47,7 Mb
GET BOOK

Description : Excerpt from The Poultry Keeper, Vol. 1: From April, 1884, to April, 1885 Grease is not beneficial to young chicks, and should be used Sparingly. Persian insect powder should always be dust ed among the feathers of lousy hens. Never give sulphur except when the weather is dry, and then only in small quantities. This is a good time of year to place down a few drain tiles in order that the yards may be dry in winter. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.