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Scientific American, Vol. 68, No. 24 (1893) (1893)

leaf 15

An illustration from Scientific American, Vol. 68, No. 24 (1893), 1893, leaf 15
o appear in the following week’s issue. ZINC ETCHING HALFTONE PROCESS e raving Ale es a te = He knows Why Because CATALO cS A secane A. SOUVENIRS, Colume |! That bia ? Columbias AEMRKELLOS. ~ = BOSTON. WASHINGTON. DENVER. SAN FRANCISC®. Lead all Bicycles. Stay at the Head. A. G. SPALDING & BROS.,… … Ac. postage. ephone in the construction of which these Style==° and filled gold cases. 2 The Holtzer-Cabot Electric Co Durability=-,.4", patos sli things or any of them are used.” LONDON HYDRAULIC POWER COM- bit ENTS waren iia FINE TOOLS NEWRY suos, 4 == All h Hi This Company also owns Letters Pa-…

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