SPENCER Scientific Instruments [ with pricelist AND ERRATA ]
Southbridge, Mass. American Optical Company, Export Sales Department [ circa 1946 ]. First Edition. 198, 203-207, [1] pages. 8vo. No date, but circa 1946. Original blue printed wrappers. Bruxelles distributor Andre Van Hopplynus de Cock sticker on front wrapper, and some additional ephemera from de Cock included with the catalog..... More