Car No. 305, Rowayton, and its sister 300-series 36-chair parlors (1-1 seating) came on board the New Haven in 1948, along with a brace of 48-chair parlors (2-1 seating) which were subsequently converted into 36-chair parlors (1-1 seating).
Some time in the early 1960s, ten of these 36-chair parlors (1-1 seating) were coverted into 7200-series coaches (2-2 seating). Car No. 305, Rowayton, was not one of these.
However, while Car No. 305, Rowayton, arrived on the New Haven as such in 1948, the September 1951 Passenger Train Consist Book shows Car No. 305 not as Rowayton, but as Woonsocket, as do all subsequent Passenger Train Consist Books.
It appears our original poster is correct, apparently Rowayton existed for a while and was renamed Woonsocket.
Ex-NYNH&H SS Opr