The Rittenhouse Orrery: Princeton's Eighteenth - Century Planetarium, 1767 - 1954, A Commentary On An Exhibition Held In The Princeton University Library, Howard C. Rice, Princeton University Library, 1954 How is that for a lengthy title, only in academia! Most know David Rittenhouse for his fantastic clocks but he was involved in numerous other activities. A scientist he made some orreries which should not come as a surprise as he included planetary sections to his tall clocks. This is one of those thin hardbound books published as part of an exhibit such as our current display at the museum. Great interest to a Rittenhouse collector. I was surprised back in the nineties when the museum had the excellent American Clock exhibit that they did not have a copy of this book. It is not common but the NAWCC Library does have a copy and it pops up on Bibliofind usually in the 50 - 85 range.