The Hagley Museum and Library in Wilmington, Delaware has a fully
operating 19th-century machine shop that is full of belts and pulleys of
the type you describe. Robert Howard, the Curator of Industry and
Technology there, might be able to suggest a source to you. The address
is Box 3630, Wilmington, Delaware 19807, phone is 302-658-2400. Good
luck with the exhibit; it sounds great! -Lonn Taylor, National Museum of
American History ([log in to unmask])