On this day (March 23) the word "OK" first appeared in the Boston Morning Post in 1839, and author Allan Metcalf, who wrote a whole book about "OK," promoted today at "OK Day."

It all started as a funny misspelling: "oll korrekt" (think of it as 19th-century text speak).

Read more: https://www.quickanddirtytips.com/qdtarchive/is-ok-okay/