Item 91737 - Boiler House, Holyoke Wharf, Portland, 1924 Item 91737 - Boiler House, Holyoke Wharf, Portland, 1924 Contributed by City of Portland - Planning & Development Item 91737 Zoom 4768px x 3520px - 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 Boiler House at Holyoke Wharf, Portland, was owned by Proprietors of Portland Pier in 1924. Show Details