This library catalog search lists the CD-ROMS owned by the AU Libraries of topographic maps produced by the U.S. Geological Survey but published by National Geographic Maps.
"Contains ArcView shapefile format county boundary files for the contiguous United States from each decade from 1790 through 1990 (also 1999). Files include county and state names as well as FIPS identification numbers and county area estimates. Territories enumerated by the U.S. Census are also included"
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Non-Web Based
RBD Libraries has city data and aerials from 2004 and b/w aerials from 1997 on compact discs available through the Innovation & Research Commons (I&RC) located on the first floor of the RBD Library.