Further reading:

T.B. Benson, “Review of Judge Keith’s Leading Decisions,” The Virginia Law Register, New Series, Vol. 1, No. 9 (Jan. 1916).

Editorial, “[Death of] Judge James Keith,” The Virginia Law Register, New Series, Vol. 3, No. 10 (Feb. 1918), 768-779.

Research collections:

Library of Virginia (State Government Records Collection)
Richmond, Va.
Papers of James Keith, President, Virginia Supreme Court of Appeals, 1843-1910 (bulk 1877-1910); 3 boxes; finding aid available.

University of Virginia (Albert and Shirley Small Special Collections Library)  
Charlottesville, Va.
Keith Family Papers, 1830-1879; James Keith papers (1 box).
Correspondence, 1902-1915; obituaries, and autograph album belonging to Keith from the 1859-1860 session at the University of Virginia. Correspondence largely with family members pertaining to family history.

Whittle Family Papers, 1753-1960, Stafford Gorman Whittle Papers, 1881-1919.
Correspondent.  Finding aid available at the repository.