C 16. U.S.A. 5 c US stamp on envelope, cancelled "U.S. Submarine Base Nwe London Conn. Jun 3 31" and written "Sailing of the Submarine Nautilus: From New London, Conn. On the way to the Artic" beside. Also an unused postcard with photo of Nautilus.

C 16. U.S.A. 5 c US stamp on envelope, cancelled "U.S. Submarine Base Nwe London Conn. Jun 3 31" and written "Sailing of the Submarine Nautilus: From New London, Conn. On the way to the Artic" beside. Also an unused postcard with photo of Nautilus.