- Birth Date
- 11 December 1798
- Death Date
- October 1856
James H. Leah
James' surname is incorrectly spelled "Lear" on the ship Horizon roster.
- Age at Departure: 57
- Head of Household
- Died en Route
- Historians Office Record of Members (Minnie Margetts file).
- "Immigration to Utah," Deseret News, 15 October 1856, 254.
- Josiah Rogerson, "Strong Men, Brave Women and Sturdy Children Crossed the Wilderness Afoot," Salt Lake Tribune, 4 January 1914.
- Journal History of The Church of Jesus Christ of Latter-day Saints, 30 November 1856, 7, 73.
- Perpetual Emigrating Fund, Financial Accounts 1849-1886, Ledger B, p. 242.
- Saints By Sea: Latter-Day Saint Immigration to America