• His travel to Utah is mentioned in a son's and a daughters's obituaries.

Willard Richards Company (1848)

• Age at Departure: 43

Sources

• Campbell, Robert L., [Journal extracts, 30 June-19 Oct. 1848], in Historian's Office, Journal 1844-1997.
• "Death Closes a Long, Useful Life," Salt Lake Herald, 25 Dec. 1911, 2.
• "Deaths," Salt Lake Telegram , 24 Jan. 1934, 14.
• "Died," Deseret Evening News , 9 July 1877, 2.
• Journal History of The Church of Jesus Christ of Latter-day Saints, Supplement after 31 December 1848, 20.
• [List of those filing for lots, 1848], in Salt Lake County Recorder's Office, Land records [ca. 1847-1860].
• "Orson Speirs Dies; A Pioneer Citizen," Salt Lake Telegram , 17 Oct. 1902, 2.
• Utah State History Cemeteries and Burials Database.