PS evidently the above full-page ad was part of a successful campaign, because WorldCon was indeed held in San Antonio in 2013.
Only about another 10 pages to go to wrap up this PB.
Begun in March 1973 as a part of the national Star Trek Association for Revival, STAR OKC was central Oklahoma's most influential seedbed of fandom through 2005. ..... This blog exists to document fandom in central Oklahoma. The area was home to PsurrealCon/PseudoCon, ThunderCon, and Soonercon (née SoonerCon) -- all begun or supported by members of STAR OKC.