A History of Short Words

From the New York Times Crossword Puzzle

MTN

Thu, 6 Feb '25
Fuji, e.g.: Abbr.
Sat, 16 Dec '23
Geographical abbr.
Thu, 9 Dec '21
Part of a range: Abbr.
Sat, 13 Mar '21
Cheyenne, e.g.: Abbr.