Mapes, J. J. 1. (1860). Sanders's water gas.: The Keystone Gas Company of Pennsylvania are the owners of Sanders's patent for manufacturing illuminating water gas, and are now prepared to sell rights for the manufacturing of this cheap illuminating gas, in any city, town, or village in the state of Pennsylvania, on reasonable terms. Philadelphia.: Crissy & Markley, printers, Goldsmiths Hall, Library Street..

Mapes, James J. 1806-1866. Sanders's Water Gas.: The Keystone Gas Company of Pennsylvania Are the Owners of Sanders's Patent for Manufacturing Illuminating Water Gas, and Are Now Prepared to Sell Rights for the Manufacturing of This Cheap Illuminating Gas, in Any City, Town, or Village in the State of Pennsylvania, On Reasonable Terms. Philadelphia.: Crissy & Markley, printers, Goldsmiths Hall, Library Street., 1860.

Mapes, James J. 1806-1866. Sanders's Water Gas.: The Keystone Gas Company of Pennsylvania Are the Owners of Sanders's Patent for Manufacturing Illuminating Water Gas, and Are Now Prepared to Sell Rights for the Manufacturing of This Cheap Illuminating Gas, in Any City, Town, or Village in the State of Pennsylvania, On Reasonable Terms. Philadelphia.: Crissy & Markley, printers, Goldsmiths Hall, Library Street., 1860.