Item 85444 - Calvert property, Crescent Avenue, Great Diamond Island, Portland, 1924 Item 85444 - Calvert property, Crescent Avenue, Great Diamond Island, Portland, 1924 Contributed by City of Portland - Planning & Development Item 85444 Zoom 4680px x 3502px - 15.6"w x 11.7"h @ 300dpi | Need a larger size? *Credit line must read: Collections of City of Portland - Planning & Development Image Info Summer Dwelling at Crescent Avenue in Great Diamond Island, Portland, was owned by Thomas E. Calvert in 1924. Show Details