A History of Short Words

From the New York Times Crossword Puzzle

MON

Sat, 14 May '22
Part of many a three-day weekend: Abbr.
Tue, 8 Feb '22
Sun. follower
Sun, 19 Sep '21
Calendar column: Abbr.
Tue, 18 May '21
M.L.K. Day, e.g.: Abbr.
Sun, 9 May '21
Sun follower?
Fri, 2 Apr '21
Many a fed. holiday