Who wrote the play 'Key Largo'?

In 1921, he founded Measure, a magazine devoted to verse. He wrote his first play, White Desert, in 1923, which ran only twelve performances, but was well-reviewed by the book reviewer for the New York World, Laurence Stallings, who collaborated with him on his next play What Price Glory?, which was successfully produced in 1924 in New York City. Afterwords he resigned from the World, launching his career as a dramatist.