I am trying to find out where to get information on the Civil War in Ohio. I have an obit I would love to post for Col. Joseph Hinson 33rd. O.V.I. I am also confused as I sounds like the 33rd only served three months. I know his obit says he served three months then signed up again. Would that have been the 73rd. that was out of Chillicote?

Any help would be grealy appreciated!
Thank you
Carol Hinson Allen