Material on the 99th Division is available from the National Archives.
Write to Bernard J. Cohn G/335, PO Box 1798, Glen Burnie MD 21060 who is willing to help with the following: After Action Reports; Operation Reports; Unit Reports; Daily Journals; Casualty and Award Lists; and similar information.
He also has Signal Corps photos. Send him a request and he'll forward information. His phone number is 410-484-7110.