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Scientific American, Vol. 94, No. 24 (June 1906) (1906)

leaf 16

An illustration from Scientific American, Vol. 94, No. 24 (June 1906), 1906, leaf 16
3 spark coil, Balls, Key, 75 ohm Relay, Coherer with autom. Decoherer, 5 cells Battery, Wiring, Connections, instructions, diagrams, etc. Will Universal indicator, H. M. Willis 822,805 work up to a mile. Price $13.50. Agents wanted. New Catalog of Agencies throughout the United States. Valve, C. W.… … tions for making tramping outfits, sleeping bags and tents; foot and guard for, H. H. Steer 822,636 The papers are richly illustrated and Wrench, J. T. Urbach 822,790 are written in the keenly critical spirit for also sucb otber sbelters as tree houses, straw buts, log cabins Writing machine, E. B.…

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