Traditionally the term refers to the listed provinces although Newfoundland is occasionally included by some modern writers. This dictionary uses the term Atlantic Provincesto include the Maritime Provinces and Newfoundland.
1850  These Provinces are of two classes--first, the Inland Portions, watered only by great lakes and rivers, and, secondly, the Maritime Provinces.
1890  They will take a trip through Ontario, on their way to the Maritime Provinces.
1966  The Maritime provinces' famous lobster catch may have an up-and-coming rival in the North Atlantic queen crab. . . .