Obituary, "Death of Judge Simpson," 3/12/1896, p. 8. Hon. Isaac P. Simpson, death date 3/12/1896. Tribute to Judge Isaac P. Simpson, 3/14/1896, p. 2. "Short Stops: What the People Are Saying," remembering the late Judge I.P. Simpson, 3/15/1896, p. 5. "Resolutions of Respect: Passed by the Bar Association in Memory of the Late I.P. Simpson," 3/22/1896, p. 5.
San Antonio Light .
Biographical sketch, Isaac P. Simpson, pp. 374-375. Born 4/24/1832 in Winchester, Kentucky.
The Encyclopedia of the New West 1881.