Geology.com has posted detailed satellite images for all 50 states. These are Landsat images from the GeoCover data set. State boundary lines are superimposed over the images as shown in the Delaware example below. Images for each state have been posted at two different scales. The Delaware image below is the less detailed one from the geology.com website.

See the entire collection at the
United States Satellite Images page on geology.com.
# posted by MapWatch @ Wednesday, March 16, 2005