Wikipedia:Selected anniversaries/July 24
- 1901 - O. Henry was released from prison after serving three years for embezzlement from a bank.
- 1911 - Hiram Bingham re-discovered Machu Picchu, "the Lost City of the Incas".
- 1927 - In Ypres the Menin Gate war memorial was unveiled.
- 1929 - The Kellogg-Briand Pact, renouncing war as an instrument of foreign policy, went into effect.
- 1983 - George Brett, batting for the Kansas City Royals against the New York Yankees, had a game-winning home run nullified in the "Pine Tar Incident".