Here is a list of Houston media in 1968. I recognize most items on the list, except KVVV-TV Channel 16. I vaguely recall the station, but I don't remember watching it. KFMK-FM is on the list - I listened to it quite a bit. Until recently I'd forgotten KLOL-FM began broadcasting in the early '70s. It's not on the list.
Once again, thank you Terry Bates for letting me scan this booklet.