1923: Instruction on the theory of evolution at the University of Arizona creates controversy in Tucson.

1945: Davis-Monthan Air Force Base is selected as the storage site for B-29 bombers.

1958: About 6.4 inches of snow falls across the metro Tucson area in the earliest and heaviest snow event on record for the metro Tucson area. Three stranded Boy Scouts die after being stranded in Madera Canyon during the freak snow storm. Their bodies were not recovered for two weeks.

1963: Thousands attend the grand opening of Tucson International Airport's new terminal. The 135,000-square-foot building replaces the terminal housed in a hangar on the airport's west ramp.

Want to share an important event from Tucson's history? Email it to krumore@azstarnet.com.