1908 April 17:
Rumford (3) post office opened. (source: Maine Philatelic Society. 1995. The Post Offices of Maine: A Rarity Guide)
1912 August 31:
Rumford (3) post office closed. (source: Maine Philatelic Society. 1995. The Post Offices of Maine: A Rarity Guide)
1916 March 22:
Rumford (3) post office re-opened. (source: Maine Philatelic Society. 1995. The Post Offices of Maine: A Rarity Guide)
1933 December 23 through 1943 December 21:
The circular postmark is 20–21 mm in diameter.
(click on an image to enlarge)
1939 December 4:
The circular postmark is 29–30 mm in diameter.
(click on image to enlarge)
1949 December 1:
The circular postmark is 29–30 mm in diameter.
(click on image to enlarge)
2020:
Rumford (3) post office. 137 Congress Street; Rumford, Maine 04276. Lat./Long.: N 44°32′46″ x W 70°32′45″
(click on image to enlarge)
today:
Rumford (3) post office is still in operation.
Rumford Center
1849 August 1:
Rumford Center post office opened. (source: Maine Philatelic Society. 1995. The Post Offices of Maine: A Rarity Guide)
date:
Rumford Center post office.
(click on image to enlarge)
today:
Rumford Center post office is still in operation.
Rumford Corner
1908 March 18:
The former Rumford (2) post office was renamed Rumford Corner post office. (source: Maine Philatelic Society. 1995. The Post Offices of Maine: A Rarity Guide)
1912 June 13:
The circular postmark is 32 mm in diameter.
(click on image to enlarge)
1912 August 31:
The Rumford Corner post office closed. (source: Maine Philatelic Society. 1995. The Post Offices of Maine: A Rarity Guide)
Rumford Falls
1892 June 28:
Rumford Falls post office opened. (source: Maine Philatelic Society. 1995. The Post Offices of Maine: A Rarity Guide)
1893 August 21:
The circular postmark is 27–28 mm in diameter.
(click on image to enlarge)
1904 August 13:
The circular postmark is 25–26 mm in diameter.
(click on image to enlarge)
1908 April 17:
Rumford Falls post office closed. (source: Maine Philatelic Society. 1995. The Post Offices of Maine: A Rarity Guide)
Rumford Point
1850 June 20:
Rumford Point post office opened. (source: Maine Philatelic Society. 1995. The Post Offices of Maine: A Rarity Guide)
1949 December 13:
The circular postmark is approximately 33 mm in diameter.
(click on image to enlarge)
today:
Rumford Point post office is still in operation.