I just saw this thread for the first time so I don't know if it's been
listed already but the Web site for my museum The University Museum of
Archaeology and Anthropology is well worth looking at/adding to your
list.
It is at www.upenn.edu/museum/

Enjoy!

Sylvia S. Duggan
Assistant Registrar, Loans
The University of Pennsylvania Museum
33rd and Spruce Streets
Philadelphia, PA  19104