Back in the early 1900s there were a handful of people making physical models of a number of these movements (and some that went beyond this incredible collecti

Back in the early 1900s there were a handful of people making physical models of a number of these movements (and some that went beyond this incredible collection). They occasionally tour, Boston's Museum of Science had a big show of William M. Clark's collection back in 2006, I think. Anyway, Cornell has "The Kinematic Models for Design Digital Library" where they try to keep track of all of these physical models: http://kmoddl.library.cornell.edu/collection-toc.php http://kmoddl.library.cornell.edu/collection-toc.php