(en) Francis B. Heitman, Historical Register and Dictionary of the United States Army, from it's Organization, September 29, 1789, to March 2, 1903, Washington, Government Printed Office, (lire en ligne)
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Clement Ferdinand Heverly, History of the Towandas, 1776-1886, Reporter-Journal Print. Co, , 267–269 p. (lire en ligne)