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 38
Ikdl|iqe. … ¥l\e Oii^nal and Only ^inuDle aiid Peffedt Jvl^f^lline }ILkie. Patented NoYsmber 8, 1853; extended September 30, 1867. Also, patented April 30, 1867 ; February 2, July 13, and November 2, 1869, and February 1, 1870. Twenty years experience in experimenting and perfecting Nathaniel Gears Combination…
