Pittsburg was founded in 1873 at a location once thought to be rich in valuable peat, but the town was soon abandoned. The founder might have intended the name to be Peatsburg. A post office spelled Pittsburgh operated between 1873 and 1875.
- U.S. Geological Survey Geographic Names Information System: Pittsburg, Nebraska
- Cox, William Wallace (1888). History of Seward County, Nebraska: Together with a Chapter of Reminiscenses of the Early Settlement of Lancaster County. State Journal Company, Printers. p. 126.
- Waterman, John Henry (1920). General History of Seward County, Nebraska. p. 19.
- "Seward County". Jim Forte Postal History. Retrieved 23 August 2014.
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