This response may be too late for your purposes. Check out the Slater
Museum at the Norwich Free Academy in Norwich, CT. Their cast collection
is from before the turn of the century.
 
Bruce C. Craig              Internet:  [log in to unmask]
Office of Museum Programs   Smithsonian Institution
A&I 2235-MRC427             Washington, DC  20560
(202) 357-3148              FAX:(202) 357-3346