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Scientific American, Vol. 96, No. 8 (February 1907) (1907)

leaf 24

An illustration from Scientific American, Vol. 96, No. 8 (February 1907), 1907, leaf 24
he A MONEY MAKER these parts are put together—riveted and screwed (never soldered)—further opportunity to master this pro- Hollow Concrete Building Blocks fession lies with you. Write to fortifies Solars against the hardest knocks and jars. Best. Fastest. Simplest, Cheapest us to=day for our free… … ing llieir construction 20 Experimental & Model Work years from now. H'tiy sh&md it not Two Gifts In One h- jt>«/ Write without delay for our 200-page book describing our Cvr. & advice free, Wm. Gardam & Son. 45-51 Rose St.N.T course*. Jt is Free, ^_ STAMP CO. MECHANICAL ENGINIp I Steel stamps,…

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