Scientific American, Vol. 5, No. 9 (August 1861)
A weekly issue of Scientific American from August 1861, published in New York by Munn & Co. as a patent and mechanics' journal for inventors, manufacturers and engineers. Wood-engraved figures show sectioned tool handles, rolled rail profiles, a lettered pigeonhole filing cabinet and a breech-loading carbine with its lock mechanism and bullet, all in fine hatched line with figure numbers and key letters usable as technical-diagram motifs.
