Resources
Library of Congress Geography & Map Reading Room
Research Guides for Geography and Map Collections
Library of Congress Maps Collections. This link allows users to start a search that is already faceted to maps that are available online.
Resources
"The collections document achievements in architecture, engineering, and landscape design in the United States and its territories through a comprehensive range of building types, engineering technologies, and landscapes .... This online presentation of the HABS/HAER/HALS collections includes digitized images of measured drawings, black-and-white photographs, color transparencies, photo captions, written history pages, and supplemental materials."