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General Research Division, The New York Public Library. "Astronomical clock & spring governor - Bond & Sons, Boston, Mass" The New York Public Library Digital Collections. 1852. https://digitalcollections.nypl.org/items/b6ccf630-4147-0134-3a95-00505686a51c
General Research Division, The New York Public Library. "Astronomical clock & spring governor - Bond & Sons, Boston, Mass" New York Public Library Digital Collections. Accessed January 16, 2025. https://digitalcollections.nypl.org/items/b6ccf630-4147-0134-3a95-00505686a51c
General Research Division, The New York Public Library. (1852). Astronomical clock & spring governor - Bond & Sons, Boston, Mass Retrieved from https://digitalcollections.nypl.org/items/b6ccf630-4147-0134-3a95-00505686a51c
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Astronomical clock & spring governor - Bond & Sons, Boston, Mass, (1852)
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