| Tampa PC Users Group (that’s us) | http://www.tpcug.org/ |
| Genealogy Atlas | http://www.genealogyatlas.com/index.htm |
| Apple II History | http://apple2history.org/ |
| America's Running Routes | http://www.usatf.org/routes/ |
| University of Texas online map collection | http://www.lib.utexas.edu/maps/ |