Item 20295 - Great Diamond Island, Portland, 1891 Item 20295 - Great Diamond Island, Portland, 1891 Contributed by Maine Historical Society Item 20295 Zoom 4806px x 3110px - 16.0"w x 10.4"h @ 300dpi | Need a larger size? *Credit line must read: Collections of Maine Historical Society Image Info The steamer "Cadet" is seen near Great Diamond Island in Casco Bay. The Great Diamond club house is at the top center of photograph. The "Cadet," with Capt. Alan Eisner, went to the World's Fair in 1893 and never returned to Portland. Show Details