Historical Marker
Battle at Picacho
Historical marker location:
Picacho, Arizona
( Marker can be reached from Interstate 10.)
Marker installed: 1984
April 15, 1862.
Arizona was the last contiguous state to join the Union: Arizona became the 48th state in the US on February 14, 1912. It was the last of the contiguous states to be admitted to the Union.