[NHCOLL-L:691] Base Map of N.Am. W/ States and Provinces

[Diana Horton]

Is there anywhere available (preferably public domain) a good base map of 
North America that includes the political divisions, but few physical 
features?  I'm looking for something that I can use to superimpose data for 
individual states and provinces.

Thanks!

Diana Horton
University of Iowa Herbarium & Biological Sciences
312 CB
University of Iowa
Iowa City, IA  52242-1297