- Birth Date
- 1 May 1836
- Death Date
- 1 July 1912
Thomas initially emigrated with the Morris Phelps Company, however, later he also participated in the rescue efforts to retrieve the members stranded in Wyoming the winter of 1856.
- Age at Departure: 15
- Age at Departure: 20
- 1900 Utah Census.
- Jones, Annie Maria Mantle, Biographical sketch of Lewellyn and Catherine Mantle.
- "Names of Persons Who Volunteer to Go as Teamsters" in Offerings for the assistance of the P. E. F. immigrants, 1856 October in Perpetual Emigrating Fund Company general files, 1850-1887.
- "Pioneer of Uintah County Gone to Rest," Vernal Express, 5 July 1912, 1.
- Utah Death Certificates.