Stoneman in his report, OR, vol. 11, pt. 1, 423-424, states that his pursuit on 4 May included the 8th Illinois Cavalry but that regiment was at that time assigned to Gen. Richardson's division of Sumner's Corps and only on 10 May joined Stoneman, Hard, 107, 118, O'Neill, B&G, 41. Stoneman apparently erred in his report. Emory did not mention the 8th Illinois in his report nor did Col Averell, OR, vol. 11, pt. 1, 433-436. McClellan agrees with Emory, Report on the Organization and Campaigns, 178-179. Unfortunately, some historians (Beatie) have relied on Stoneman's apparently mistaken report.
Any experts out there for AOP May 62? BTW, I do have O'Neill (in all iterations)and Hastings.