A History of Short Words

From the New York Times Crossword Puzzle

EMS

Tue, 23 Aug '22
What makes clay clammy?
Fri, 27 May '22
Myanmar has two of them
Tue, 25 Jan '22
Millennium, at the beginning and end?
Thu, 20 Jan '22
Lifesaving inits.
Tue, 28 Dec '21
Ambulance letters
Wed, 20 Oct '21
Museum wings?
Sun, 16 May '21
Grp. mobilized by a 911 call
Sun, 10 Jan '21
Mammal's head and heart?