April 12 in Arizona History
1886: General Nelson A. Miles arrived at Bowie Station to open a new campaign against the Apaches.
1889: Flagstaff residents burned in effigy Gov. Lewis Wolfley to protest his veto of a bill that was to create Coconino County.
1902: The Village of Yuma was incorporated as a town. It became a city in 1914.
1910: A.W. Stewart, a Prescott electrician, built a new airship embodying the principals of the Wright Brothers machine, but with many new improvements of his own.