Alan and Ann Rothschild own the largest privately-owned collection of publicly-viewable patent models in the U.S., the Rothschild Petersen Patent Model Museum. Containing nearly 4,000 patent models and related documents, the collection spans America's Industrial Revolution. Alan — an inventor himself — and his wife Ann have constructed an impressive facility to display hundreds of the models, along with a workshop/laboratory where the remaining models are stored, studied, and cared for.