Researching Woody Guthrie's early years in Los Angeles, '37-39. Industry exec Hal Horton's bios have been a problem. On the off chance some of the authors are also Mudcat readers:

“One offer, though, was too good to pass up. In mid-January, a representative of the Consolidated Drug Company named Hall Horton called KFVD and asked Woody if he and Lefty Lou would like to sing on station XELO in Tijuana, Mexico, for seventy-five dollars per week. More important than money to Woody, though, was that Horton wanted him to assemble a troupe of hillbilly performers to broadcast for three hours each night.”
[Klein, p.102]