A History of Short Words

From the New York Times Crossword Puzzle

CIT

Sat, 28 Oct '23
Loc. ___ (footnote abbr.)
Sat, 8 Jan '22
Loc. ___
Sun, 5 Dec '21
Op. ___ (footnote abbr.)
Sun, 7 Nov '21
Op. ___
Sun, 24 Oct '21
Op. ___ (footnote abbr.)