The US Library of Congress American Memory site has once again expanded its unmatched digital historical collection with a new feature. This collection is an initial offering of material from the HABS and HAER, both of which document achievements in architecture, engineering, and design in the United States and its territories. HABS and HAER are two of the most heavily used collections in the Prints and Photographs Division of the Library of Congress, and online resources include images, surveys, survey photos, and measured drawings from 1933 to the present. Users can search by keyword or browse by subject index or geographic location index. Additional material will be added monthly.