463695 Keyser & Foxe\'s mahogany steam saw mill & turning shop, printed by Wagner & M\'Guigan, c.1847 (litho) by Heiss, George G. (1823-c.1885) (after); 45 x 59 cm; Library Company of Philadelphia, PA, USA; (add.info.: No. 21 [later 225] Crown St. between Race & Vine Sts., Philadelphia. Advertisement showing three men working with mahogany logs in a four-story, brick building tenanted by the saw mill of Jacob Keyser and Bryan Fox at 225 Crown Street. One of the laborers guides a log onto a block and tackle lift from the sidewalk (left), while another holds the ropes and waits for the log on the second level. Another laborer moves a log on a ramp through an open doorway on the first floor (right). In the foreground, an unhitched dray rests near a log in the cobblestone street. The basement, first, and second floor windows and doors ... ); 穢 Library Company of Philadelphia ; Library Company of Philadelphia; American, out of copyright.