The University of Kansas adopted the Jayhawk, a mythical bird whose roots lie in the 1850s border war in Kansas Territory over slavery, when the term "Jayhawker" came to be applied to people who favored making Kansas a free state. Lawrence, where the university was founded after the Civil War, was a free state stronghold. The first known connection between KU and the Jayhawk came in 1886, when Professor E.H.S. Bailey used the term in the science club's cheer, which soon evolved into the "Rock Chalk, Jayhawk" chant. In 1912, George Bowles wrote the song "I'm a Jayhawk," and student Henry Maloy drew the first popular depiction of the mascot. Before that, KU's athletic teams had no set mascot. Five cartoon versions of the Jayhawk appeared before 1946, when student Harold "Hal" Sandy created the familiar smiling bird. Sandy sold the copyright to the Kansas Union Bookstore for $250, a substantial sum at the time. The Jayhawk became the university's most recognizable symbol and a popular trademark that earns revenue for scholarships and other purposes, and on September 12, 1996, a parade down Jayhawk Boulevard honored Hal Sandy on the fiftieth anniversary of his contribution to his alma mater.