Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Groucho Marx:

"

After a few stabs at entry-level office work and jobs suitable for adolescents, Marx took to the stage as a boy singer with the Gene Leroy Trio, debuting at the Ramona Theatre in Grand Rapids, Michigan, on July 16, 1905.[6] Marx reputedly claimed that he was "hopelessly average" as a vaudevillian, but this was typical Marx, wisecracking in his true form. By 1909, Minnie Marx had assembled her sons into an undistinguished vaudeville singing group billed as "The Four Nightingales". The brothers Julius, Milton (Gummo Marx) and Arthur (originally Adolph, but Harpo Marx from 1911) and another boy singer, Lou Levy, traveled the U.S. vaudeville circuits to little fanfare. After exhausting their prospects in the East, the family moved to La Grange, Illinois, to play the Midwest.[citation needed]