You may have already had these responses: I think that the Pennsylvania Academy
of the Arts still has their cast collection of the classic Greek and Roman
standards. They are in Philadelphia. And, I think that the Carnegie Museum of
Art in Pittsburgh still has their architectural casts modeled on the V&A in
London, if not actually cast from the V&A. Of course, the V&A still has their
famous architectural monuments bits on display; they are now part of the
history of display and teaching in museums.