Wolfman Jack a/k/a Bob Smith started on XERF in 1958. This date is not cast in stone. An internet search found very little to nail down his starting date. That gave him a 5 year lead on KAAY. We were obviously very direct competitors. XERF was a 100,000 clear channel station licensed in Mexico but identified itself as Del Reo Texas. I believe Wolfman died in 1995 but his programs live on in syndication and on XM radio. To read more about Mexico AM power stations go to:http://www.ominous-valve.com/xerf.html
Every DJ could do a Wolfman Jack inpersonation. I used a Wolfman like voice to do a "Doctor Feelgood" show on a black radio station. Wish I had some tape of that experience.