Progress on excavating back of seawall E. Cambridge Power Station Excavating back of seawall E. Cambridge Power Station Piling to wharf E. Cambridge Power Station Seawall, E. Cambridge Power Station Seawall and foundations E. Cambridge Power Station Seawall and wharf at E. Cambridge Power Station E. Cambridge Power Station, seawall and foundations E. Cambridge Power Station Foundations of seawall at E. Cambridge Power Station Foundations of seawall E. Cambridge Power Station E. Cambridge Power Station portion of view seawall E. Cambridge Power Station Wharf at E. Cambridge Power Station looking n.w. Wharf at E. Cambridge Power Station E. Cambridge Power Station general view of wharf looking southerly Wharf at E. Cambridge Power Station Warf at E. Cambridge Power Station E. Cambridge Power Station progress on wharf E. Cambridge Power Station progress on wharf looking westerly E. Cambridge Station progress on wharf looking westerly E. Cambridge Power Station concrete foundations E. Cambridge Power Station e. side of coal run E. Cambridge Power Station w. side of coal run E. Cambridge Power Station, underneath coal run Brattle St. Subway Mass. Ave., North Cambridge Harvard Bridge - detail Harvard Bridge Harvard Bridge Harvard Bridge Rail on Harvard Bridge Harvard Bridge Harvard Bridge Harvard Bridge Cambridge, Lechmere Sq. Lechmere Sq. Lechmere Sq., Cambridge Lechmere Sq. Lechmere Sq., Cambridge Lechmere Sq. Lechmere Sq., Cambridge Lechmere Sq. Lechmere Sq. Lechmere Sq., Cambridge Lechmere Sq. Lechmere Sq. Lechmere Sq. Lechmere Sq. Lechmere Sq. Sheds on Charles River Ave., Charlestown