Item 69412 - 311 Ocean Avenue, Portland, 1924 Item 69412 - 311 Ocean Avenue, Portland, 1924 Contributed by City of Portland - Planning & Development Item 69412 Zoom 4746px x 3428px - 15.8"w x 11.4"h @ 300dpi | Need a larger size? *Credit line must read: Collections of City of Portland - Planning & Development Image Info Greenhouse at 311 Ocean Avenue in Back Cove, Portland, was owned by Linwood B. Miller in 1924. Show Details