The pages showing Cape Cod service from a 1930 timetable of service operated by the New York, New Haven and Hartford Railroad
New York, New Haven and Hartford Railroad
<a rel="nofollow" class="external text" href="https://www.scribd.com/document/126333881/1930-06-09-Cape-Cod-Timetables-New-Haven-RR">Scanned copy</a> on Scribd