Scientific American, Vol. 6, No. 21 (May 1862)
A weekly issue of Scientific American from May 1862, published in New York for inventors, mechanics and manufacturers, largely given to patent claims and descriptions of new machinery. The wood engravings are labeled technical diagrams — sectioned wheels, lamps, rollers, lathes — plus an ornamental "Patent Claims" heading showing a columned building framed by foliage.
