Have you written to the 7th Veteran's association? The Veterans of the Seventh Regiment 643 Park Ave New York, NY 10021-6122 They are still 'a band of brothers'. Even if your ancestor never joined, they might have some pointers to sources for those years. Don't overlook the NY Times. It is indexed for those years & the Seventh was a newsworthy group at any time. & I just checked the USAMHI site http://carlisle-www.army.mil/usamhi/aspfiles/UnitHistories.asp & see they have 'updated' their format to a point that, on my system, anyway, it's nearly unreadable. But this one might have something about that timeframe; Todd, Frederick P., & Miller, Kenneth C. _Pro Patria et Gloria: The Illustrated Story of the One Hundred and Fifty Years of the Seventh Regiment of New York_ (107th Infantry Regiment N.Y.N.G.). Hartsdale, NY: Rampart House, 1956. ca 55 p. UA363.2.7th.T6. And don't overlook the State Archives, and the New York State Division of Military and Naval Affairs for info. Both have been helpful to me in the past-- and your ancestor being an officer should increase your chances for documentation/photos. jim