Item 91279 - Sheehan property, North Shore Island Avenue, Long Island, Portland, 1924 Item 91279 - Sheehan property, North Shore Island Avenue, Long Island, Portland, 1924 Contributed by City of Portland - Planning & Development Item 91279 Zoom 4824px x 3647px - 16.1"w x 12.2"h @ 300dpi | Need a larger size? *Credit line must read: Collections of City of Portland - Planning & Development Image Info Summer Dwelling at North Shore Island Avenue in Long Island, Portland, was owned by Alice M. Sheehan in 1924. Also known as "Gem". Show Details