Item 85717 - Bruton property, Summit Avenue, Great Diamond Island, Portland, 1924 Item 85717 - Bruton property, Summit Avenue, Great Diamond Island, Portland, 1924 Contributed by City of Portland - Planning & Development Item 85717 Zoom 4812px x 3527px - 16.0"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 Summit Avenue in Great Diamond Island, Portland, was owned by Leon G. Bruton in 1924. Show Details