Area 12-A is created from the southern portion of Area U, that was called Section A of Area U:
||Area 12-A (1946-50):|
|Topa Topa 291|
|1948: San Gorgonio 298|
└ Gorgonio 298 (nc)
|6/15/1950: Miwok 304 (dis 10/1950)|
└ Cayucos 304 (nc)
|Sinawava 312 (dis 1/50)|
|5/22/1946: Nisjaw 338 (dis 8/4/1947)|
|3/1948: Ho-Mita-Koda 380|
|5/1948: Chiriqui 391*|
|2/21/1950: Ahwahnee 430|
|1950: Wipala Wiki 432|
|5/31/1950: Ashie 436|
Wipala Wiki Lodge's history website
"Areas and Area Lodges", Sep. 1948 National Bulletin
"AREAS, AREA LEADERS, AND LODGES," list from National, dated 5/13/1949
"Order of the Arrow Organizational Pattern and Local Lodge Listing," from National, dated 4/27/1950
Events were still called "Section A" conferences. Twelve lodges attended the 1947, 1948, and 1949 conferences.
Reference: Tracy Schultze Area Conference History for Area U and Area U, Section A
*At least two sources claim that Chiriqui 391 (Canal Zone Council) was briefly part of Region 12. Tom Tabb in his book Order of the Arrow History For Area U Section A / Areas XIIA, XIIE, & XIIF / Sections W4A, W4B, W4C, & W5A states:
"In 1945... Area U consisted of all lodges in Arizona, California, Nevada, and the Canal Zone." However, Chiriqui wasn't chartered until two months after the 1948 conference. At first, I simply ignored this, as Chiriqui was historically associated with lodges in Florida.
In fact, the initial 12 Region/Area assignments from National in 1948 listed 391 as "territorial", and then wasn't even included in National's 1949 List. However, Chiriqui was listed as part of Area XII-a in National's 1950 and 1952 "Organizational Pattern and Local Lodge Listings". Tabb also confirms Chiriqui was in 12-A in 1951.
Tracy Schultze's Area Conference History for 12-A specifically lists Chiriqui as part of 12-A from 1953-55. It also includes a copy of the the program booklet for the 1954 Area 12-A Conference, which confirms that Chiriqui attended Camp Bill Lane. But then, National Lodge lists for 1953 and 1955 place Chiriqui under "Extra-Regional." Perhaps it attended in 1954, or other years, as a non-member?
And then finally in 1959, Chiriqui began its long-time association with the lodges of Florida when it was moved to Area 6-E.