Item 62211 - 26 Warren Avenue, Portland, 1924 Item 62211 - 26 Warren Avenue, Portland, 1924 Contributed by City of Portland - Planning & Development Item 62211 Zoom 4735px x 3466px - 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 Offices at 26 Warren Avenue in Riverside, Portland, was owned by Southworth Machine Company in 1924. Show Details