Wikipedia uses a series of location maps on articles about the states, like http://en.wikipedia.org/wiki/Wyoming - the the map on the right side of the page, just below the state flag and seal.
It sounds like I'm allowed to use these images on my website as long as I include the proper credit. The only problem is the credits are awfully long for images this small; I don't want to insert a big credit on each page.
So I wanted to ask if these maps belong to Wikipedia in the first place...or are they public domain?
Incidentally, I will be linking my pags to Wikipedia; in fact, I already have.
Thank you.