Item 85445 - Ross property, Sunset Avenue, Great Diamond Island, Portland, 1924 Item 85445 - Ross property, Sunset Avenue, Great Diamond Island, Portland, 1924 Contributed by City of Portland - Planning & Development Item 85445 Zoom 4776px x 3479px - 15.9"w x 11.6"h @ 300dpi | Need a larger size? *Credit line must read: Collections of City of Portland - Planning & Development Image Info Summer Dwelling at Sunset Avenue in Great Diamond Island, Portland, was owned by Charles H. Ross in 1924. Show Details