Excerpt from Cyclical Maintenance for Historic Buildings On May 13, 1971, President Richard Nixon signed Executive Order 11593, entitled Protection and Enhancement of the Cultural Environment, a far-reaching document charging all departments and agencies of the Federal government with responsibility for preserving the Nation's historic properties. Under the Executive Order, the Secretary of the Interior is responsible for developing and disseminating to Federal agencies and State and local governments information con cerning professional methods and techniques for preserving, improving, restoring and maintaining historic properties. That responsibility has been delegated to the National Park Service, and this report on the maintenance of historic buildings is issued to further the purposes of that Executive Order. 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.