(Manufacturer) Manufacturing Machines & Tools Advertising Covers, balance of 171 ad covers, 1870-1890's; an array of products and companies including 1850's Starbucks Brothers' Steam Engine Works - Troy, N.Y. cover showing Steam Engine and franked with four margin #11, 1860's D. Pomroy - Orange, Mass. showing New American Heat Regulator (6 with 4 in colors), Josiah Ross Wood-Working Machinery - Buffalo, N.Y., Neer Dynamometer Co. - New Haven cover showing Dynamo Meter and franked with grilled 2¢ Blackjack, O.K. Wood & Co. - West Chazy, N.Y. showing Queen of the Harvest Grain & Seed Separator, James Leffel & Co. - Springfield, O. showing Improved Double Turbine Water Wheel, Cox Bros. & Co. - Bridgetown, N.J. showing Canning Machine, etc.; some flaws, Very Fine overall, a wonderful assembly of manufacturing machine ads. Estimate  $3,000 - 4,000. $0 (Image)