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 488
The above engraving represents the Cases and Station Cards to be used in connection withthe Thomas Patent Safety Check. All information in reference to the Check will be, cheerfully famished by addressing a. F. THOMAS, 90, 92 and 94 Grand Street, NEW YORK. •o4