This card is an illustration of Cape Cod, the bay and eastern Massachusetts, prominently featuring the location of the Plimoth Plantation.
The description states:
FOR A VACATION TRIP INTO HISTORY
Plymouth, Massachusetts, centers in a history-rich vacationland spreading along the Bay State shores from Greater Boston to Provincetown. Make Plymouth your vacation headquarters. Motor along super highways and quiet by-ways for daily enjoyment of anything from ocean surf to Pilgrim history.
–This map calls out most of the interesting towns and cities along Cape Cod, many of which have a lengthy historical background. This card likely dates from the 1950s.