Title: 1948/May: Initial advertisement promoting flights from Provincetown to Boston
Source: Provincetown Newspaper
Date: May 10th, 1948
This is it. This advertisement signaled the beginning of PBA — May 10th, 1948 — with the start of service from Provincetown, MA (PVC) to Boston, MA (BOS) operated by Cape Cod Flying Service. The Provincetown-Boston Airline, Inc. name would be adopted a year or so later.
Scanned, from personal collection.
This 70+ year old newspaper clipping is the oldest piece currently in the collection.