March 1942 Wartime Submarine Cachet Mail, standard size envelope, has U.S. Navy Cancellation - individual ship names were no longer included (as in pre-war mail) in the cancellation for security reasons.
Coins & Stamps, Stamps
New York
Massachusetts
Vermont
Illinois
Texas
Colorado
Florida
Connecticut
California
Connecticut
New York
Pennsylvania
New York
Rhode Island
North Carolina
Texas
Washington
Massachusetts
Washington
District of Columbia