Scientific American, Vol. 90, No. 18 (April 1904)
An issue of the weekly popular-science magazine Scientific American, published by Munn & Co. in New York in April 1904 for inventors, engineers and general readers. The plates mix coarse halftone factory photographs — glassblowers at their furnaces — with line-engraved views of gas engines, dynamos and lighting sets, plus advertising cuts carrying prices and display type, useful for machine silhouettes, industrial interiors and period ad layout.
