Further reading:

Parker is thought to have been a contributor to The Old Bachelor, a series of essays compiled and edited by William Wirt (1814).

Charles Henry Ambler, Thomas Ritchie; a study in Virginia politics (2013), available online through the Hathitrust Digital Library. Parker was a political ally and brother-in-law of Ritchie.

Joseph Hobson Harrison, Jr., “Martin Van Buren and His Southern Supporters,” The Journal of Southern History, vol. 22, no. 4 (Nov. 1956) 438-458.

Howard Alexander Morrison, “Gentlemen of Proper Understanding: A Closer Look at Utica’s Anti-Abolitionist Mob,” New York History Vol. 62, No. 1 (January 1981), 61-82. Parker’s letters to Van Buren figure in Morrison’s discussion of tensions between Northern and Southern Democrats in the 1830s.

Henry R. Simms, The Rise of the Whigs in Virginia (1929); includes a discussion of Parker’s editorial control of the Winchester Virginian newspaper.

John Edmund Stealey III, “The Responsibilities and Liabilities of the Bailee of Slave Labor in Virginia,” The American Journal of Legal History, Vol. 12, No. 4 (October 1968), 336-353. Stealey discusses Parker’s rulings on leasing slave labor in two opinions:  The Commonwealth v. Richard Booth, 2 Va. Cas. 394 (1824); and William Spencer v. Alexander Pilcher, 8 Leigh (1837).

Reference Collections:

Duke University (David M. Rubenstein Rare Books and Manuscript Library)
Durham, NC
James Henry Rochelle Papers, 1811-1907.
Parker is represented in the political correspondence of James Rochelle, clerk of court, Courtland County, Va.

Library of Congress Digital Collections
Martin Van Buren Papers, 1787-1910 
Letters (19), 1832-1840, from Parker to Van Buren pertaining to state and national politics; include Parker’s letter, December 1838, declining President Van Buren’s offer to serve as  U.S. Attorney General.

West Virginia University (West Virginia and Regional History Center)
Morgantown, WV
Charles James Faulkner Papers, 1786-1878
Parker is represented in Faulkner’s correspondence about state and national politics, 1827-1840; finding aid available.