Amid Chicago's North Shore communities is a national landmark--the former U.S. Army Base at Fort Sheridan (1887-1993). Fort Sheridan was created out of the civil and labor unrest following the Chicago Fire of 1871, the great Railway Strike of 1877, and the Haymarket Riot of 1886. These events produced an atmosphere of insecurity, prompting Chicago's wealthiest businessmen--North Shore residents and members of the Commercial Club of Chicago--to levy...