• Captain of company

  In 1868, he was a returning missionary from Europe.

William B. Preston Company (1864)

• Age at Departure: 33
• Company Captain

William B. Preston Company (1863)

• Age at Departure: 32
• Company Captain

Company Unknown (1868)

• Age at Departure: 37
• Returning Missionary

Sources

• 1900 United States Federal Census
• "About the 'News'," Deseret News, 21 September 1864, 408.
• "Agents and Immigration," Deseret News, 10 August 1864, 361.
• Bailey, Charles Ramsden, [Autobiography], in Our Pioneer Heritage , 20 vols. [1958-77], 17:287-88.
• Bailey, Charles Ramsden, [Autobiography], in Jay L. Long and Betsy W. Long, Charles Ramsden Bailey: His Life and Families [1983], 60-61.
• Bailey, Charles Ramsden, Autobiography [ca. 1905], 49.
• "Bishop Preston Called By Death," Salt Lake Herald, 3 August 1908, 1.
• Bodily, Robert, Journal, in Library of Congress, Collection of Mormon diaries [1935-1938], reel 2, item 4, 14-17.
• "Captain William B. Preston, memorandum book, 1864," Perpetual Emigrating Fund Company church trains accounts 1861-1868, Captains' accounts 1862-1868.
• “Captain William B. Preston Company (first ox train), manifest, 1864.” Perpetual Emigrating Fund Company church trains accounts 1861-1868, Captains’ accounts, 1862-1868.
• Charles Keilgaard Hansen, Record [ca. 1917], fd. 1, 83-89.
• “Freight Manifests, 1864, 1868.” In Perpetual Emigrating Fund Company church trains accounts 1861-1868, Freight manifests, 1861-1868, p. 12-31. (CR 376 8, Box 1, Folder 4)
• “Freight manifests, 1863-1864.” In Perpetual Emigrating Fund Company church trains accounts 1861-1868, Freight manifests, 1861-1868. 
• Freshwater, William Henry, Life sketch, in Mormon biographical sketches collection [ca. 1900-1975], reel 16, box 22, fd. 10, item 1, 2.
• Freshwater, William Henry, Reminiscences. (Trail excerpt transcribed from "Pioneer History Collection" available at Pioneer Memorial Museum [Daughters of Utah Pioneers Museum], Salt Lake City, Utah. Some restrictions apply.)
• Henry Ballard, Private journal of Henry Ballard, 1852-1904, 49-60.
• "List of Passengers," Deseret News, 17 August 1864, 369.
• "Local Affairs: Emigrant Train," Salt Lake Daily Telegraph, 16 September 1864, 3.
• "Local Affairs: The Emigrants," Salt Lake Daily Telegraph, 15 September 1864, 3.
• "Local Affairs: The Trains," Salt Lake Daily Telegraph, 12 Sep. 1864, 3.
• Missionary Department Missionary Registers, 1860-1959, Volume 1.
• Morgan, O. J., Account book, 1877-1878, 98-104.
• Neve, Soren Peter, Journal, in Soren Peter Neve, His Life Story, 8.
• "Our Immigration," Deseret News, 14 September 1864, 400.
• Sessions, Edgar, Autobiographical sketch.
• "Short History of Bishop Preston," Logan Republican, 5 August 1908, 1.
• Sprague, Matilda Christina Ohlson, Autobiographical sketch, in Genealogical Charts and Biographical Sketches of Members of the L.D.S. Church, Ogden Stake, 26 vols., 4:46-47.
• Sprague, Matilda Olson, [Interview], in "Utah Pioneer Biographies," 44 vols., 27:52.
• Utah, Early Mormon Missionary Database
• Utah Death Certificate Index, 1905-1967.
• Warnick, Christine Marie Larsen, "History of Christine Marie Larsen Warnick by herself," in Merrill N. Warnick, Warnick Family History, vol. 1 [1967], 252-56.