A History of Short Words

From the New York Times Crossword Puzzle

SERTA

Sat, 1 Jun '24
Company originally founded as Sleeper, Inc.
Wed, 13 Mar '24
Sealy competitor
Thu, 11 Jan '24
Company where workers may sleep on the job
Thu, 12 Jan '23
Company whose mascots are sheep with numbers painted on them
Sun, 24 Jul '22
Casper competitor
Sun, 27 Feb '22
Brand with an iComfort line
Sat, 1 Jan '22
Brand with an iComfort line
Tue, 16 Nov '21
Sealy competitor