I received this week the Muster Roll record for Robinson W. BARTON from the NY State Archives. It lists the enlistment date as August 11, 1862 at Owego and mustered in on August 12, 1862 at age 18. There seems to be a second enlistment date and muster in date at age 19. (not sure what that means) and muster out date of June 4, 1865 with "Co. at Delaney House, D.C." The Remarks section says "Absent missing since the battle of Petersburg, VA. July 30, '64 as Robinson W. MR-Oct-64 Promoted to Corpl February 10, '65: M-OR." There are also several notations such as M-1R and M-OR+MR-Oct-64 and " Apr 18, 63 and M-OR in the margins. I have no idea what these may mean and no idea where I could find out! Any ideas????