Item 85491 - Laughlin property, Valley Avenue, Great Diamond Island, Portland, 1924 Item 85491 - Laughlin property, Valley Avenue, Great Diamond Island, Portland, 1924 Contributed by City of Portland - Planning & Development Item 85491 Zoom 4728px x 3478px - 15.8"w x 11.6"h @ 300dpi | Need a larger size? *Credit line must read: Collections of City of Portland - Planning & Development Image Info Camp at Valley Avenue in Great Diamond Island, Portland, was owned by Robert S. Laughlin in 1924. Show Details