1. Priced and illustrated catalogue of Hirsch, Kahn & Co., manufacturing opticians Author(s): Hirsch, Kahn & Co. Publication: [San Francisco, Calif. : The Company, 1887] Subject(s): EyeglassesEquipment and SuppliesOptics and Photonics
2. 1851-1878 illustrated catalogue and price list of optical, meteorological and mathematical instruments manufactured and imported Author(s): Goldbacher, Ernest. Publication: New York : E. Goldbacher, [1879?] Subject(s): Optics and Photonics -- instrumentationEyeglassesMicroscopy -- instrumentation
