A History of Short Words

From the New York Times Crossword Puzzle

ATF

Sat, 3 May '25
Fed. agency that investigates arson
Sun, 8 Dec '24
Anti-trafficking org.
Thu, 19 Sep '24
Govt. agency whose initialism omits "Explosives"
Wed, 18 Sep '24
Govt. agency that investigates, among other things, arson
Wed, 7 Aug '24
Gun-regulating grp.
Thu, 1 Feb '24
Org. whose initials omit its "E" (for "Explosives")
Fri, 12 Jan '24
Arson-investigating org.
Thu, 4 Jan '24
Antitrafficking org.
Sat, 1 Jan '22
Anti-trafficking org.
Wed, 16 Jun '21
D.O.J. agency
Thu, 25 Mar '21
Division of the Justice Dept.