A History of Short Words

From the New York Times Crossword Puzzle

MLK

Fri, 2 Dec '22
Monogram of 1964's Nobel Peace laureate
Wed, 26 Oct '22
___ Day (Jan. observance)
Wed, 8 Jun '22
Author of the "Letter From Birmingham Jail," in brief
Tue, 18 Jan '22
Reform leader memorialized in the Stone of Hope, for short
Wed, 11 Aug '21
Jan. honoree
Thu, 24 Jun '21
Leader in the civil rights movement, in brief