1873 Print Gothic Hot-Air Furnace Brickwork Vintage Machine Alex M Lesley MAB1 XEL9 This is a small original

This is a small original 1897 black and white print ad for Sozodont

This is an original 1910 black and white print ad for DuPont Brushes for a variety of uses and in an array of materials

Stanley Baldwin

Venice" (1912) and "A Street in St

This is an original 1922 black and white two-page print ad for the Crowell Manufacturing Company's line of Rotary Air Compressors

1873 Print Gothic Hot-Air Furnace Brickwork Vintage Machine Alex M Lesley MAB1 XEL9 This is a small originalThis is an original 1873 halftone print of a Gothic Hot Air Furnace, made by Alex M. Lesley, 224 West Twenty third Street, New York City. The Gothic Furnace is best adapted for the application of the brickwork arrangement around the same. It consists of double walls L M, between which the air passes first before receiving its final heating. This air enters at the upper left hand corner, from an air shaft connected with the outside, so as not to drive