The MOLLUS website had a detailed history of the 6th Regiment MO Cavalry. Is this the same 6th MO that was in Totten's Division? The source cited was pages 1306 and 1307 of A Compendium of the War of the Rebellion Volume III by Frederick H. Dyer. I just tried to access the MOLLUS site and the address was no longer valid. I have a hard copy of the information.
My great grandfather's brother, Henry Calvin CAVENDER served with the 6th MO Cavlary.