Mahlon Betts
 ( This main line survives today as part of Amtrak's Northeast Corridor . ) Betts became a director in the merged railroad , and his service as a railroad executive is noted on the 1839 Newkirk Viaduct Monument in Philadelphia . 
<triplet> Amtrak <subj> Northeast Corridor <obj> owner of <triplet> Northeast Corridor <subj> Amtrak <obj> owned by