----------------------------Original message---------------------------- Christopher; We have a complete listing of USGS topos on our web site http://www.omnimap.com The listing is organized by state and each state lists the topos within the state and the border sheets as well. The list includes ISBN #; USGS file #; sheet name; sheet publication date; scale. This list was accurate as of January 1, 1996, and was compiled from USGS data. This listing is also available on floppy. Give a yell if you have any questions. Russell Guy OMNI Resources [log in to unmask] http://www.omnimap.com