Reference for natural gas history comes from records and files of the Michigan Public Service Commission as well as several books that discuss the history of natural gas in Michigan.
- Michigan Consolidated Gas Company
Keepers of The Flame The People Of MichCon 1849-1999
Detroit: Michigan Consolidated Gas Company, 2000.

- Bush, George
Future Builders The Story of Consumers Power Company
USA: McGraw-Hill Book Company, 1973

- Mitts, Dorothy M.
A History of Gas Service In Port Huron 1870-1958
Port Huron: Jensen-Townsend Printing Company, 1958

- Panhandle Eastern Pipe Line Company
50 Panhandle
Panhandle Magazine No 3/4, 1979
Special edition highlights 50 years of business.
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