Bill of sale to C.I. Horsman from Thomas Butterworth, for natural gas used at his dry goods store.
Charles I. Horsman
October 1, 1861
Midway Village Museum
Charles I. Horsman, “Energy Costs,” Midway Village Museum - Digital Collections, accessed September 21, 2021, https://midwayvillagemuseumdigitalcollections.omeka.net/items/show/5838.