"Letter from James Buchanan to Reuel William" (U.S. Senator Buchanan discusses David Porter and the 1838 gubernatorial election in Pennsylvania). Carlisle, Pennsylvania: Dickinson College, Archives & Special Collections, retrieved online December 30, 2022.
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Egle, William Henry. "The Buckshot War," in The Pennsylvania Magazine of History and Biography, Vol. 23, No. 2 (1899), pp. 137-156. Philadelphia, Pennsylvania: University of Pennsylvania Press.
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"The Governors of Pennsylvania." Mount Union, Pennsylvania: The Mount Union Times, January 27, 1911, p. 1 (subscription required).
"The Gathering of the People" and "Democratic Anti-Masonic Meeting." Lancaster, Pennsylvania: Examiner & Herald, June 14, 1838, p. 3 (subscription required).