1850: Yuma Indians attack the ferry at Yuma Crossing. Fifteen people are killed and three reach safety on the west coast.
1886: Fire destroys a block of business buildings in Phoenix. The town had no fire department or water works.
1919: The Arizona Daily Star reports that tests and experiments are to be conducted for the first time concerning the use of airplanes to spot forest fires and transport firefighters.
1923: The Steward Observatory, located on the University of Arizona campus near the Mall and North Cherry Avenue, is formally dedicated. It contains a 36-inch telescope using the first large telescope mirror cast in the United States. Construction began in 1916 with a gift of $60,000 by Lavinia Steward, an amateur astronomy buff, in honor of her late husband, Henry. The telescope is transferred to Kitt Peak in 1962 and remains in use today.
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