Waban_star writes in with a link to MICRODEM, “a microcomputer mapping program written by Professor Peter Guth of the Oceanography Department, U.S. Naval Academy.” It’s available for free, apparently, from the site. Waban says, “This is a good program, if not always user friendly. This can be used to teach yourself about Geographic Information Systems, Tiger census data, aerial mapping, satellite photography, digital elevation models, etc.” Has anyone else used this program? What do you think?