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 129
and emery wheels for polishing all kinds ofhardware; smoke and gas from smoky smiths shops and manufacturing establishments and chemical works;steam and vapor arising from paper machines and all drying cylinders and dry-rooms; also, sweat from mill stones,offensive odors from try-kettles and dyeing… … 119
