1854: The Gadsden Purchase — in which the United States purchased almost 30,000 square miles of land in southern Arizona and southwestern New Mexico from Mexico — is ratified and signed by President Franklin Pierce. It became effective June 30, 1854.
1877: Schools in Tucson are closed due to a smallpox epidemic.
1896: A plague sweeps hog farms in the Salt River Valley and 8,000 hogs die in the following three months.
1898: Gov. Myron H. McCord receives official authorization to enlist volunteers for the Rough Riders.
1933: Bandits hold up the Valley Bank at Globe and escape with $34,000.
1934: Six-year-old June Robles is kidnapped as she returns home from Roskruge School, and a note demanding $15,000 ransom for her safe return is delivered to her father, Fernando Robles.
June would be found May 14 shackled in a small cage in the desert, about nine miles outside Tucson. The kidnapping remains the only modern major unsolved abduction in the nation. Read more about it here.
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