Gordon, Martin K. "Patrick Magruder: Citizen, Congressman, Librarian of Congress." Quarterly Journal of the Library of Congress 32 (July 1975): 154-71.
a Representative from Maryland; born at "Locust Grove," near Rockville, Montgomery County, Md., in 1768; attended Princeton College, Princeton, N.J.; studied law, was admitted to the bar, and practiced; unsuccessful candidate for election to the United States House of Representatives in 1801 and 1803; elected as a Republican to the Ninth Congress (March 4, 1805–March 3, 1807); unsuccessful candidate for reelection to the Tenth Congress in 1806; elected Clerk of the United States House of Representatives for the Tenth and for the three succeeding Congresses and served until his resignation on January 18, 1815 (December 26, 1807–January 18, 1815); Librarian of Congress from 1807 until January 18, 1815, when he resigned; died in Petersburg, Va., December 24, 1819; interment in the family burying ground on the ancestral estate, "Sweden," near Petersburg, Dinwiddie County, Va.
*Resigned on January 28, 1815. House Journal, 13th Congress, (January 28, 1815): H694.