It would be difficult to overstate the importance of Harriet Monroe (left) in Vachel Lindsay's career. In 1912, as she was researching prospective contributors for her brainchild magazine, Poetry, she found Vachel in an issue of the American and contacted him through that magazine.
Lindsay, fresh from the road on his last great tramp, responded with a large envelope full of verses including General William Booth Enters into Heaven. The appearance of that poem in Monroe's magazine in January, 1913 was the break-through event that secured Lindsay's place in American letters. Monroe later called it "a great event in the art."
Monroe remained a loyal friend and ally of Lindsay's for the rest of his life.