- Birth Date
- 18 May 1848
- Death Date
- 26 November 1905
William John Douglass
- Age at Departure: Infant
- Born en Route
- Agnes Cross Douglass letter. Trail excerpt transcribed from "Pioneer History Collection" available at Pioneer Memorial Museum [Daughters of Utah Pioneers Museum], Salt Lake City, Utah. Some restrictions apply.
- "First 100, report, 1848 June" in Camp of Israel schedules and reports 1845-1849, Brigham Young's 1848 emigration division.
- Our Pioneer Heritage, vol. 13, p. 327
- "Pioneer Dies at Payson," The Salt Lake Herald, 28 Nov. 1905, 8.
- Utah Death Certificates.