13 Stars Flag

Also, they were not the 13 States but rather the 13 Colonies as we know them. Some were Provinces and some were declared to be Colonies. Here is how it shook out.

New England Colonies

Province of New Hampshire, later New Hampshire
Province of Massachusetts Bay, later Massachusetts and Maine
Colony of Rhode Island and Providence Plantations, later Rhode Island
Connecticut Colony, later Connecticut

Middle Colonies

Province of New York, later New York and Vermont
Province of New Jersey, later New Jersey
Province of Pennsylvania, later Pennsylvania
Delaware Colony (before 1776, the Lower Counties on Delaware), later Delaware

Southern Colonies
(Virginia and Maryland comprised the Chesapeake Colonies)

Province of Maryland, later Maryland
Colony and Dominion of Virginia, later Virginia, Kentucky, and West Virginia
Province of North Carolina, later North Carolina and Tennessee
Province of South Carolina, later South Carolina
Province of Georgia, later Georgia, northern sections of Alabama and Mississippi

Modern pictorial postmarks notwithstanding, if this blog is to be believed the last machine cancelled flag postmark was at Sidney Center, New York on November 11, 1941:

http://nypostalhistory.blogspot.com...-cancel.html

An interesting piece of philatelic trivia.

Very interesting as I had no idea they stopped in 1941.

I had no idea either, until I came upon the website. I find it interesting that the postmark was suspended less than a month before the bombing of Pearl Harbor. I would have thought that with the Patriotism sentiment following that event, the post office would have have had cause to reinstate the use of the postmark depicting the US Flag.