1846: President James K. Polk declares a state of war exists between the United States and Mexico.

1920: The city of Tucson charges that Phoenix is holding up its census figures until it could learn Tucson's population — and then boost their numbers to put Phoenix ahead.

1929: A forest fire, which had burned for days in the Patagonia Mountains, is finally put out — just in time to save the town of Harshaw.

Also in 1929: Barney Oldfield, famous racing driver, narrowly escapes death when his car overturns on the highway near Winslow after hitting a road scraper.

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