Scientific American, Vol. 90, No. 16 (April 1904)
A weekly American technical and popular-science magazine, published by Munn & Co. in New York in April 1904 for engineers, inventors, and general readers following industrial news. Halftone photographs of engines, aircraft frames, and machinery sit alongside engraved sectional diagrams of wheels and cylinders and small advertising cuts of motors, offering designers coarse-screen mechanical imagery, cutaway drawings, and period trade-ad line work.
