A History of Short Words

From the New York Times Crossword Puzzle

SIRS

Sun, 27 Aug '23
Some unnamed addressees
Sun, 29 Jan '23
Knights and noblemen
Thu, 22 Dec '22
Knights, e.g.
Mon, 10 Oct '22
Titles for knights
Sat, 28 May '22
Distinguished fellows
Thu, 7 Apr '22
Francis Drake and Ernest Shackleton, for two
Mon, 29 Nov '21
Lancelot and Gawain of legend
Tue, 22 Jun '21
Opening of some formal letters
Sat, 20 Mar '21
Old-fashioned letter opener