EBT alterations - gas and compressed air pipes on Chelsea St. EBT alterations - general view looking south Chelsea St. EBT alterations - general view looking south EBT alterations - southerly view w. side of Mav. Sq. EBT alterations - Chelsea St. northerly view EBT alterations - Chelsea St. southerly view EBT alterations - basement no.11 Lewis St. EBT alterations - new concrete mixer EBT alterations - new concrete mixer EBT alterations - underpinning shed 15-16 on Lewis St. EBT alterations - foundation wall no.3-5 Lewis St. EBT alterations - general view of westerly side of Lewis St. looking southerly from Webster St. EBT alterations - concrete arch at Maverick House EBT alterations - sta. 1+40 westerly track CB tunnel alternations - esc. station, westerly track EB tunnel alternations - general view shed 84-88 EB tunnel alternations - no.15 Chelsea St. EB tunnel alternations - rear no.15 Lewis St. Underpinning Lewis St. EBT alterations - no.7 to 13 Lewis St. EBT alterations - 1 to 7 Lewis St. EBT alterations - passageway to 15 Lewis St. EBT alterations - rear - 9 to 13 Lewis St. EBT alterations - northerly view from passageway easterly side, Lewis St. EBT alterations - northerly view of Lewis St. from passageway EBT alterations - northerly view of easterly side Chelsea St. EBT alterations - general northerly view of easterly side Chelsea St. EBT alterations - passage way between 13 and 15 Lewis St. EBT alterations - Winthrop St., southerly view EBT alterations - condition of 63-71 Maverick. Sq. EBT alterations - condition of building no.63-71 Maverick Sq. EBT alterations - condition of building no.63-71 Maverick Sq. EBT alterations - conditions of floor 19 Lewis St. EBT alterations - no.3 to no.9 Lewis St. EBT alterations - 1-7 Lewis St. EBT alterations - no.11 to 13 Lewis St. EBT alterations - no.3 to 7 Lewis St. EBT alterations - no.5 to 11 Lewis St. EBT alterations - no.5 to 11 Lewis St. EBT alterations - easterly side of Maverick Sq. (sta.98) EBT alterations - westerly side Chelsea St. looking northerly EBT alterations - easterly side Chelsea St. looking southerly EBT alterations - easterly side Chelsea St. looking northerly EBT alterations - underpinning westerly side - Lewis St. sta.4 EBT alterations - westerly side - Lewis St. sta. underpinning EBT alterations - underpinning no.1 Lewis St. EBT alterations - underpinning no.1 Lewis St. EBT alterations - westerly side, Lewis St. sta. 4 + 40I Westerly side, Lewis St. - southerly view from Sumner St. New sewer westerly side of Chelsea St.