The "Picadio Pass" reference in Arizona is actually Picacho Pass Arizona -- not to be confused with Picacho Pass near Las Cruces, New Mexio (April 15, 1862- 50 miles Northwest of Tucson).
1) http://www.wtj.com/articles/picacho/
2) I don't particular care for this source (Wikipedia), but the Picacho Pass info does cross-check for the most part:
http://en.wikipedia.org/wiki/Battle_of_Picacho_Pass

Stanwix Station, in western Arizona, was another skirmish site (March 15, 186 - 280 miles east of Yuma, Arizona)
1) http://americancivilwar.com/statepic/az.html
2) Wikipedia again - but some of the data is reliable -- although this article cites the skirmish as March 30, 1862)
http://en.wikipedia.org/wiki/Stanwix_Station

Good "general sketch" of the Civil War in Arizona / New Mexico territory at
1) http://www.discoverseaz.com/History/Civil_War.html

There was also a case at Fort Fillmore, New Mexico in which Confederate forces took control of the fort in 1861 but abandoned it shortly thereafter. Fort Fillmore was not re-occupied by the Federals -- although it remained listed as Federal outpost until it was officially abandoned in 1862.
(Good general ino as well as Fort Fillmore info)
1) http://www.sangres.com/history/civilwarnm.htm

Los Angeles California area presently has one (1) Civil War Museum. It is at Drum Barracks / Camp Drum:
1) http://www.drumbarracks.org/ and
2) http://www.beachcalifornia.com/civil-war-california-actors.html

-kirby-