Interior Pictures Pemberton Mill, Lawrence Massachusetts Tweet 1967 INTERIOR BASEMENT, CENTER MASONRY PIERS, WITH OPENINGS FOR FORMER MAIN DRIVE SHAFT 1967 INTERIOR BASEMENT, STONE PIER AND BEAMS DETAIL 1967 INTERIOR CAST IRON STAIRWAY 1967 INTERIOR CAST IRON STAIRWAY DETAIL 1967 INTERIOR ROOF FRAMING AT CLERESTORY WINDOW 1967 INTERIOR ROOF FRAMING AT CLERESTORY WINDOW, DETAIL