EBT alterations - arch at Bell Mouth sta.1 EBT alterations - easterly side of Chelsea St. southerly view EBT alterations - removing temporary timbers sta. 2 of Maverick Sq. EBT alterations - easterly side Maverick Sq. looking northerly from Sta.3 EBT alterations - arch and underpinning view from sta.100 EBT alterations - gen. view of southwesterly corner of Summer and Lewis Sts. EBT alterations - exc. westerly side - Maverick Sq. station EBT alterations - exc. at shed 88 Lewis St. easterly side EBT alterations - cutting away piles, sta.9 + 60I EBT alterations - exc. Webster St. easterly side of Lewis St. EBT alterations - interior exc., easterly side Lewis St. EBT alterations - view under no.9 Lewis St. EBT alterations - view under no.9 Lewis St. EBT alterations - easterly side Maverick Sq. station EBT alterations - easterly side Maverick Sq. station reinforcing rods EBT alterations - underpinning - corner of Summer and Lewis Sts. EBT alterations - foundation wall Sumner. St. at Lewis St. EBT alterations - westerly side on Maverick Sq. looking southerly from sta. 1 EBT alterations - westerly side Maverick Sq. looking southerly EBT alterations - stub end single track storage northerly view from sta.1 EBT alterations - underpinning under no.1-3 Lewis St. EBT alterations - foundation wall shed no.88 on Lewis St. EBT alterations - foundation wall shed no.88 on Lewis St. EBT alterations - easterly side - southerly loop sta. 9 EBT alterations - westerly side - southerly loop - sta. 9 Westerly side of Maverick Sq. looking northerly from sta. 1 + 30 Westerly side of Maverick Sq. looking northerly from sta. 1 + 00 EBT alterations - old 2ft. diameter sewer westerly side of Chelsea St. station EBT alterations - westerly side Maverick Sq. EBT alterations - corrugated casing, shed 74 on Lewis St. EBT alterations - corrugated casing, shed 74 on Lewis St. EBT alterations - corrugated casing, spiral stairway - shed 74 on Lwis St. EBT alterations - exc. sta.2 easterly side Maverick Sq. EBT alterations - exc. sta.2 + 50 westerly side Maverick Sq. EBT alterations - driving sheeting - westerly side - Chelsea St. sta.95 EBT alterations - southerly view of arch at sta.2, Mavewrick Sq. EBT alterations - easterly side - Chelsea St., northerly view from sta. 95 Excavation for Maverick Sta., E. Boston Excavation for Maverick Sta., E. Boston EBT alterations - piles - shed 74 on Lewis St. EBT alterations - foundation wall shed 78 on Lewis St. EBT alterations - crack in parapet 23' from easterly - sheds 25-26 EBT alterations - crack in parapet 20 from easterly - sheds 25-26 EBT alterations - piles - no.5 Lewis St. EBT alterations - crack in southerly wall (Lewis St.) EBT alterations - piles under no.5 Lewis St. EBT alterations - brick arched sewer with wooden invert - Chelsea St. core northerly EBT alterations - placing beam under shed 78 on Lewis St. EBT alterations - basement no.11 Lewis St. EBT alterations - new concrete mixer