Item 85519 - Carleton property, E. side Summit Avenue, Great Diamond Island, Portland, 1924 Item 85519 - Carleton property, E. side Summit Avenue, Great Diamond Island, Portland, 1924 Contributed by City of Portland - Planning & Development Item 85519 Zoom 4728px x 3527px - 15.8"w x 11.8"h @ 300dpi | Need a larger size? *Credit line must read: Collections of City of Portland - Planning & Development Image Info Summer Dwelling at E. side Summit Avenue in Great Diamond Island, Portland, was owned by Katherine M. Carleton in 1924. Show Details