April 4 - RCA Victor Records[?] announces that it will release all pop singles in mono and stereo simultaneously, the first record company to do so. Elvis Presley's single, "Stuck on You," is RCA's first mono/stereo release.
... Louisiana Purchase Exposition World's Fair opens in Saint Louis, Missouri (closes December 1)
November - Theodore Roosevelt defeats Alton B. Parker in the U.S. ...