Gear's illustrated catalogue of wood and iron working machinery (1872)
A.S. Gear, Gear, A. S · Boston : Printed at A.S. Gear's printing office, 62 Sudbury Street · leaf 234
9, 10, 11, 12 s- U i:^CH. Entirely new and neat in design, witli patent damper intop section. WF^SM, … A New Pattein Iwo Boiler Furnace. J^os. 6, 7 S 8. Wrnl^Bk