Item 85446 - McKey property, Crescent Avenue, Great Diamond Island, Portland, 1924 Item 85446 - McKey property, Crescent Avenue, Great Diamond Island, Portland, 1924 Contributed by City of Portland - Planning & Development Item 85446 Zoom 4746px x 3569px - 15.8"w x 11.9"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 Maria C. McKey in 1924. Show Details