- In 1863, the U.S. Congress made Arizona a U.S. territory. The first capital was Fort Whipple.
- In May 1864, the territorial capital was moved to Prescott.
- In 1867, the territorial capital was moved to Tucson.
- In 1877, the capital moved back to Prescott.
- Finally, Phoenix was declared the permanent capital starting February 4, 1889.
Arizona Blue Book 2003-2004 edition. Jan Brewer, Secretary of State Publisher [Phoenix, Ariz.]. Pages 12-13.
Cosulich, Bernice. Tucson; with map of landmarks, references, glossary, chronology [and] bibliography. Tucson, Arizona Silhouettes . Pages 175-191.
Sonnichsen, C.L. Tucson, the life and times of an American City. Norman: University of Oklahoma Press. c1982. Pages 56-58, 65-66, 68-69.
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