Pinsker, Matthew. "Be Kind, Rewind: My Time with Microfilm," in "History 204, 'Introduction to Historical Methods.'" Carlisle, Pennsylvania: Dickinson College, October 20, 2017 (retrieved online December 30, 2022).
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"George Wolf Historical Marker." Harrisburg, Pennsylvania: Pennsylvania Historical and Museum Commission, retrieved online December 30, 2022.
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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"Remarkable Coincidence," in "Young Men's Convention." Lancaster, Pennsylvania: Examiner & Herald, May 3, 1838, p. 3 (subscription required).
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"Governor Joseph Ritner" (biography). Harrisburg, Pennsylvania: Pennsylvania Historical and Museum Commission, retrieved online December 30, 2022.
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