Who is ASL in 1945 Song On The Atchison Topeka & Santa Fe - Classic Trains Magazine

Regarding the Seashore Museum's trolley ride, it was about a mile to a turnaround, then back.  At the time, the volunteers were attempting to extend the rails.  Was this segment part of the actual route of the Atlantic Shore Line?  Since the route I traversed was completely tree lined, what would have been the next stop beyond Kennebunkport?