Item 90931 - Dorsey property, S. Side Island Avenue, Long Island, Portland, 1924 Item 90931 - Dorsey property, S. Side Island Avenue, Long Island, Portland, 1924 Contributed by City of Portland - Planning & Development Item 90931 Zoom 4734px x 3578px - 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 Dwelling at S. Side Island Avenue in Long Island, Portland, was owned by John F. Dorsey in 1924. Show Details