Fort Sheridan Fort Sheridan (Ill.). Highland Park Historical Society Military bases Verso of photo reads W. Wittens (sic) Mann ; Axel Roberg ; workmen at Fort Sheridan. Maybe William Witten. circa 1885-1888 image image image/jpeg photograph https://highlandparkhistory.org//fort-sheridan-photos-2 Box 1 Folder 13 Arenberg family. eng Illinois--Lake County--Fort Sheridan