Signedmarked on base: BAUSH / & LOMB / OPTICAL CO. / ROCHESTER / U.S.A [in prism]
Inscribedon base: U.S.A PATENT / 1,756,283 / SERIAL NO. 26131
Historical AttributesUsed at Harvard Medical School
Primary SourcesBausch & Lomb Optical Company, Microscopes & Accessories (Rochester, NY: Bausch and Lomb Optical Co., 1929), 158-59.
Bausch & Lomb Optical Co., Catalog D-111: Scientific Instruments (Rochester, NY: Bausch & Lomb Optical Co., 1940), 123.
ProvenanceTransferred to CHSI from Countway Library, Harvard Medical School, 1971