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Scientific American, Vol. 77, No. 18 (1897) (1897)
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A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS, CHEMISTRY, AND MANUFACTURES. Vol. LXXVIL—No, 18, NEW YORK, OCTOBER 30, 1897. eee … : 4 AF ea y Jj rif j wi ot a - , , 4 “ +} ] ERECTING BALLROOM TRUSS. i! Ny! nae 2 r iS q % — > \ et — tas \ —~7 — 1 t ' Ps | ghee — © 1897 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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