Johns Hopkins University
John Hopkins University: Color Landform Atlas of the u.s.
This site from John Hopkins University provides detailed maps of and physical information on each of the 50 states. Maps range from relief maps to satellite images, to historical maps.
Teacher Oz
Teacher Oz: 50 States of the u.s.a.
A site with information such as maps, flags and songs of each of the 50 states in the US.