Thanks for your reply. My current research is on the final phase of Wilson's Raid and its aftermath. The 17th Indiana marched through Columbus, GA on April 17th along with Minty's Division (formerly Long's). Do you have any writings from Frank White? If so, I would be extremely interested in reviewing them. Of course, I would be happy to pay any costs related to obtaining copies.
You are correct, Horace Lamson was the Lt.Col. of the 4th Indiana Cavalry. This unit participated in the fight at West Point. However, the Lamson who commanded the post at Columbus immediately following the end of hostilities was Capt. John C. Lamson of the 17th Indiana's Co. B. He and the men of the 17th are mentioned in local newspapers of that period as being a part of the city's garrison. While I do have copies of many of the orders that Capt. Lamson had printed in Columbus, I have been unable to track down any first person account written by a member of the 17th describing their duty in the city. Part of the problem is that it appears that only a portion of the regiment was stationed in Columbus. The rest were either retained at Macon or sent to Atlanta. If you or anyone else should know of any such materials, I would be greatly appreciative of knowing the source so that I might obtain copies.
Thanks again for your post.