Scientific American, Vol. 68, No. 12 (March 1893)
A weekly issue of Scientific American, published by Munn & Co. in New York in March 1893 for inventors, engineers and mechanically minded general readers. Wood-engraved and line cuts show machinery in three-quarter view, patented devices, pumps, flywheel engines and a safety bicycle, plus advertising blocks with hatched shadows, type set into the image, and dense black silhouettes.
