Scientific American, Vol. 10, No. 25 (June 1864)
A weekly American patent and invention journal, published in New York City in June 1864 for inventors, mechanics and manufacturers. The wood engravings show hand tools, boring bits, drop-hammer and mill frames in tonal cross-hatching, plus flat outline diagrams with dotted sight lines, labelled with figure numbers and letter keys usable as spot art or technical ornament.
