Signedon binocular body: Ernst Leitz / Wetzlar
on rack and pinion block: E. LEITZ / WETZLAR [in achromat logo] / Germany
on Periplan eyepieces: Ernst Leitz Wetzlar
on Periplan eye pieces and UO extension tubes: Germany
on box of spare bulbs: Leica / E. Leitz, Inc. / NEW YORK
on box for Ultropak and UO 11-50X extension tube: Leitz
on packing slip: E. LEITZ INC. 304 Hudson Street near Spring / NEW YORK 13, N. Y.
on Leitz Ultropak catalogue, 1935: E. LEITZ, INC. / 60 EAST 10TH ST. NEW YORK, N.Y.
on dust cover: E. LEITZ / INC. / WETZLAR [in achromat logo]
Historical AttributesUsed by William A. Jackson, first librarian of Houghton Library.
When Houghton Library opened in 1942, Jackson invested in a lot of state-of-the-art equipment for examining books and investigating them. The apparatus included microscopes, black lights, and special lamps.
This particular type of instrument was made as early as 1935, but this one was not purchased until 1950. The earlier date is found in Leitz catalogues related to the Ultropak system. The later date is found on a packing list. These accompanied the microscope kit and are in the CHSI instrument file.
Primary SourcesLeitz Ultropak (New York: E. Leitz Inc, 1935)
Leitz Ultropak for Observations in Incident Light at All Magnifications (New York: E. Leitz Inc., 1939).
Price List of Leitz Microscopes and Scientific-Optical Equipment (New York: E. Leitz Inc., c. 1950).
E. Leitz Inc., New York, packing slip, no. 116355, May 4, 1950. [in CHSI file]
ProvenanceWilliam A. Jackson, Librarian, Houghton Library, Harvard University, c. 1942 ; transfer to CHSI courtesy of Dennis Marnon, 2009.