- Birth Date
- Death Date
More research is needed to confirm his identity. William Preston's Memorandum states that he was from Box Elder County.
- Age at Departure: Unknown
- Out-and-Back Teamster
- "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), manifests, 1864.
- “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)