North Lubec, Maine
(February 2, 1870 to December 28, 1874)
(January 26, 1875 to February 13, 1882)
No postmarks are recorded for the 1870 to 1874, and 1875 to 1882 offices.
(July 14, 1884 to December 29, 1975)
North Lubec, Maine (open July 14, 1884 to December 29, 1975), August 11, 1897 letter to Eastport, Maine.