Johnston, Mrs. Thomas Hamer. The Johnsons of Maryland. Daughters of the American Revolution Magazine. October 1914, XLV (4): 174 [2017-10-01]. (原始内容存档于2021-06-05).
Pope, John (1770–1845). Biographical Directory of the United States Congress. [2012-08-09]. (原始内容存档于2012-10-24).
Johnston, Mrs. Thomas Hamer. The Johnsons of Maryland. Daughters of the American Revolution Magazine. October 1914, XLV (4): 174 [2017-10-01]. (原始内容存档于2021-06-05).