Typed Letter Signed / Inscribed Photograph Signed.
A giant in the world of ophthalmology, this oculist and inventor is best known for pioneering the development of the industrial borescope and other optical devices in use today; in 1920 he founded Lexon Instrument Company. TLS, 1p, 8½" X 11", Philadelphia, PA, 1957 January 12. Addressed to Mr. and..... More