• The Digital Atlas of the USA 2000 CD-ROM, which costs around $45, and contains a ton of data, much of which can be downloaded (slowly) for free at:
• The USGS Mapping homepage, click on downloadable data for particularly useful stuff.
  • I have used much of this stuff, and have done a lot of data conversion. So, let me know if you'd like help downloading and/or using this stuff

last updated: 1/12/00