Circular - To Patentees and Manufacturers of Machinery in Practical use in the United States - Dictionary of Machines, Mechanics and Engineering

New York: D. Appleton & Co., 1849. Letterfolds.. A single-fold circular announcement and description of the upcoming publication of Dictionary of Machines, Mechanics and Engineering. Inside pages blank. May 1, 1849. Postally used. Addressed to a Nail Machinist in Bridgwater MA. Measures 10" c 8