- Birth Date
- 26 November 1837
- Death Date
- 3 July 1916
Joseph Howard Ashton
His birth and death dates are confirmed by his death certificate and obituary.
- Age at Departure: 12
- 1850 Iowa Census, Pottawattamie County.
- Martin W. Mills autobiography and journal, circa 1875-1885, 4, 10-11.
- Mills, Martin Walderfin. Reminiscence. Robert Vern Noble collection, circa 1994.
- "Pioneer and War Veteran Passes Away," American Fork Citizen, 8 July 1916, 5.
- Utah Death Certificate Index, 1905-1967.