Scientific American, Vol. 82, No. 20 (May 1900)
A weekly American popular-science and invention magazine, published in New York by Munn & Co. for engineers, manufacturers and general readers, issue of 20 May 1900. The plates are wood-engraved and line-block views of belt-driven lathes, ore-washing and screening plants, armor-plate mills and machine housings, drawn in three-quarter view with dense hatching and cast shadows on plain grounds, useful as cut-out industrial silhouettes and shading reference.
