Excerpt from Haer Checklist, 1969-1985: A Listing of Sites, Structures and Objects Documented by the Historic American Engineering RecordAt this writing, the haer collection can be used in two ways by visiting the Library of Congress in Washington or by ordering documentation over the telephone or by mail. To facilitate ordering reproductions from the haer collection, all documentation has been produced in a standard format. Drawings are produced on 24 x 36 inch mylar drawing sheets; photographs are made on 4 x 5 or 5 x 7 inch negative sheet film; written reports are typed on 8 x 111/z inch pages. Reproductions of drawings can be ordered as full-size xerox on vellum or they can be reduced to 8 x 10 inch photographic prints or xeroxes. Photographs can be printed as 4 x S or 5 x 7 contact prints or enlarged to 8 x 10 black and white glossy or exhibition quality prints.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.