Scientific American, Vol. 77, No. 1 (1897)
A weekly American science and engineering magazine, published in New York in 1897 for a general readership of inventors, engineers and technically minded readers. Its pages carry line-drawn illustrations of machines, vessels and devices, with captions naming each invention. The pictures here show a military observation balloon with ground crew, a ship deck plan, a bicycle brake diagram and a locomotive valve testing device, all drawn in clean black linework with numbered callouts that a designer could use for technical diagrams.
