TLS signed “Thos. A. Edison,” one page, 8.25 x 10.5, Orange, New Jersey laboratory letterhead, May 16, 1916. Edison writes to William Maegerlein in Chicago. In full: “I beg to thank you for your favor of the fifth instant and also for the samples of prepared skin. I shall be very glad to have these tested for my diaphragms and other uses. I shall communicate with you further on the matter if I find they can be used to advantage….” The “prepared skin” sent to Edison was for likely intended for testing in his phonograph, which employed a diaphragm (throughout its history, made of varying materials, including metal and mica) as part of the reproducer and sound box. A William Maegerlein worked with the movie industry supplying stagecoaches, wagons and horses for the movie industry, various rodeos and wild west shows. Accompanied by a related letter from Edison’s chief engineer to the same recipient. In fair condition, with intersecting folds (vertical fold to last name), creases and wrinkles (crease lightly touching signature), tears and chips, and light soiling. The signature is otherwise clear and dark. RRAuction COA.
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