A History of Short Words

From the New York Times Crossword Puzzle

AMTRAK

Wed, 7 Jan '26
Travel option that serves 46 states
Tue, 27 Aug '24
The National Railroad Passenger Corporation, familiarly
Sun, 17 Dec '23
Operator of the Texas Eagle and Southwest Chief
Sun, 26 Jun '22
Operator of the Valley Flyer and Coast Starlight
Sun, 13 Feb '22
Service with a Capitol Corridor route
Wed, 16 Jun '21
Operator of the California Zephyr