463151 Section of the fire plug used in Philadelphia, 1854 (litho) by Rease, W.H. & Schell, F. (19th century); 57 x 36 cm; Library Company of Philadelphia, PA, USA; (add.info.: Three sectional views of the fire plug showing an external view and views in the open and shut position at the "Ordinary Level of Pavement." Below is an explanation of the diagram signed Frederic Graff, Superintendent of Fairmount Waterworks, dated January 15, 1854. Explanation contains instructions on how to close and open the plug and mentions handling procedures for firemen.); 穢 Library Company of Philadelphia ; Library Company of Philadelphia; American, out of copyright.