So. Boston - power station So. Boston - power station So. Boston - power station So. Boston - power station So. Boston - power station So. Boston - power station Andrew Sq. Station Andrew Sq. Station - newstand South Boston general yard Old Jail House South Boston South Boston General yard, South Boston General yard, South Boston General yard, South Boston South Boston - 3 Blake Terrace, near D.R.T. South Boston - 3 Blake Terrace, near D.R.T. 3 Blake Terrace, near D.R.T. - South Boston 3 Blake Terrace, near D.R.T. - South Boston 3 Blake Terrace, near D.R.T. - South Boston 3 Blake Terrace, near D.R.T. - South Boston 3 Blake Terrace, near D.R.T. - South Boston Andrew Sq. traffic circle Andrew Sq. escalator Andrew Sq. escalator Watertown, concrete masonry at Watertown bridge Watertown Bridge, E. Side Watertown Bridge, E. Side Watertown Bridge Watertown Bridge progress on concrete work Watertown Bridge progress on concrete work Watertown, concrete bridge Watertown, concrete bridge Mt. Auburn St. R.R. crossing, Watertown Watertown carhouse Watertown carhouse Watertown carhouse Watertown carhouse, progress, lobby Watertown carhouse lobby Watertown carhouse lobby Watertown carhouse Prepayment area Watertown Arsenal Watertown Arsenal - turnstiles Watertown Arsenal - turnstiles Watertown Arsenal - entrance to prepayment area Watertown Arsenal-entrance Watertown Arsenal easterly entrance to prepayment area Watertown Arsenal easterly entrance to prepayment area Watertown Arsenal-wall of prepayment area Building on Florence St.,Malden Rear of buildings on Florence St., Malden