Signedon back of mirror and on lid of box: SPENCER / BUFFALO / U.S.A. [in achromat trademark]
Inscribedmarked on back of mirror and on case: 56
Historical AttributesThis instrument was used in the Biological Laboratories of Harvard University.
Primary SourcesSpencer Lens Company, Catalog of Spencer Products including Microscopes, Microtomes, Delineascopes and their Accessories with Other Scientific Optical Instruments (Buffalo: Spencer Lens Company, 1924), 69.
Spencer Lens Company, Catalog (Not complete) of the More Popular Spencer Microscopes, Microtomes, Delineascopes, Optical Measuring Instruments and Accessories (Buffalo: Spencer Lens Company, 1930), 63.
ProvenanceBiological Laboratories, Harvard University; transfer to CHSI, 1981.