1894: Dr. A.E. Douglass selects a site in Flagstaff for the Lowell Observatory.

1923: Four people die in an explosion at Benson's Apache Powder Plant.

1925: A wolf-like pack of 15 or 20 wild dogs kill livestock and terrorize children in the Silverbell Road area near Tucson.

Also in 1925: Citizens of Bisbee form the Bisbee Volunteer Forest Fire Fighting Corps, which consists of 13 groups of four men each, trained in firefighting.

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