SAH Archipedia is an authoritative online encyclopedia of the built world published by the Society of Architectural Historians and the University of Virginia Press, and contains histories, photographs, and maps for more than 8,500 structures and places
This union catalog of art and rare book sale catalogs provides access to holdings of specific sales catalogs in major research collections, but does not indicate what individual works sold for.
Provides digitized historic fire insurance maps for most cities and towns in Illinois. The large scale plans chart the growth and development of these communities. An index to the maps is available on the Chicago Public Library web site.