"A Diderot Pictorial Encyclopedia of Trades and Industry," Edited with an
Introduction and Notes by Charles C. Gillespie. In Two Volumes, Volume One.
Plates 154-158. Dover Pictorial Archive Series. Dover Publications, Inc., New
York. Copyright 1959, 1987. Free use of up to ten plates without special
permission. This edition first published 1993. 31 East East 2nd Street,
Mineola, NY 11501. (I once worked around the corner for United Parcel Service)

The First Volume came off the presses in 1751.

Another source would be the brochures of the Crystal Palace Exhibition in
London, 1851. A foundry owner from the Hudson Valley in New York State used
them to construct the Confederacy's powder mill 30 miles from Atlanta. Some
historians theorize the Civil War would have been shortened by a year if
General Sherman had found it, outside Atlanta, GA.

George J. Myers, Jr.