Edison Phonoplex System of Telegraphy [cover title]
New York: Edison Phonoplex / Edison Manufacturing Company c1892. First Edition. 38, [2 (blank)] pages. 8vo. Publisher's tan wrappers printed in black. Wrappers are fragile, browned with some chipping to the front wrapper in the margins. Internally sound with much better paper quality. Stapled with wrappers affixed to the text..... More

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