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Scientific American, Vol. 60, No. 24 (June 1889) (1889)

leaf 15

An illustration from Scientific American, Vol. 60, No. 24 (June 1889), 1889, leaf 15
^tuniiiU %mmtm. [June 15, 1889. 382 … FELT & TARRANT MFG. CO., 62-56 Illinois St. Chicago THE COPYING PAD.—HOW TO MAKE and how to use; with an engraving. Practical directions STEAM REGULATiNGf^PECIUTIES how to prepare the gelatine pad, and also the aniline ink by which the copies are made; how to apply the written letter to the pad;…

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