Re: Lt. Col. Calvin Waldo Marsh
Calvin W. Marsh, age 35, Major, 3rd Regiment Missouri U. S. Reserve Corps., joined for duty and enrolled May 8, 1861 at St. Louis, Mo. for 3 months, mustered out at St. Louis, August 17, 1861
M405: Compiled Service Records of Volunteer Union Soldiers Who Served in Organizations From the State of Missouri.