Leo PolaskiHistorians Glen Williford and Leo Polaski, authors of Arcadia Publishing's New York City's Harbor Defenses, are active in military and local history organizations, including the Coast Defense Study Group. They have compiled this comprehensive volume rom photograph collections at the National Archives, the National Park Service, the Northrop-Grumman History Center, the Cradle of Aviation Museum, local historical societies, and private collections. Read More Read Less