Item 85495 - Blanchard property, Bay Avenue, Great Diamond Island, Portland, 1924 Item 85495 - Blanchard property, Bay Avenue, Great Diamond Island, Portland, 1924 Contributed by City of Portland - Planning & Development Item 85495 Zoom 4644px x 3527px - 15.5"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 Bay Avenue in Great Diamond Island, Portland, was owned by Lucy N. Blanchard in 1924. Alice B. Blanchard M. W. Blanchard Show Details