Arizona Statehood Day
Arizona became a state on February 14, 1912.
Source:
"Arizona State Capitol Museum." Arizona State Library, Archives and Public Records, a division of the Secretary of State. http://www.lib.az.us/museum/statehood.aspx (accessed October 8, 2011).
"Kids' Page." Arizona Secretary of State ~ Home Page.http://www.azsos.gov/public_services/Kids/ (accessed October 5, 2011).