No information is available on Wheeler. Sleeper (Dec. 31, 1862-1932) served as Governor of Michigan, 1917-1921, State Treasurer, 1909-1913, and Seantor from the Twentieth District (Thumb Area), 1901-1902. Vaughn (Aug. 1, 1857- ) served as Secretary of State in Michigan, 1915-1920, as Senator from the Fifteenth District, 1903-1904, 1911-1912. (For more information on Sleeper see Michigan Biographies v. 2, pp. 193-294 or p. 387 for Vaughn.).
From the description of Certificate of Appreciation, 1918. (Clarke Historical Library). WorldCat record id: 42516361