Compound duplex steam pumping engines. Henderson's patent. Capacity from 250,000 to 8,000,000 gallons per day. High and low pressure, single, duplex, and condensing. Office, Forrest Building, 119 South Fourth Street, Philad'a, Pa.

"1 Collotype illustration from a photograph of a pumping engine ... First leaf is an appeal to the public not to buy engines from a rival whose circular is dated March 5th, 1871: this reference is used for the date of the print frontispiece. The collotype is by Rehn & Dickes, 125 South 4th Street, Philadelphia."--Hanson Collection catalog, p. 40.