Item 85434 - Casco Bay Lines property, Fessenden Avenue, Little Diamond Island, Portland, 1924 Item 85434 - Casco Bay Lines property, Fessenden Avenue, Little Diamond Island, Portland, 1924 Contributed by City of Portland - Planning & Development Item 85434 Zoom 4776px x 3502px - 15.9"w x 11.7"h @ 300dpi | Need a larger size? *Credit line must read: Collections of City of Portland - Planning & Development Image Info Wharf at Fessenden Avenue in Little Diamond Island, Portland, was owned by Casco Bay Lines in 1924. Casco Bay Lines Wharf and Buildings Show Details