An episode of the Danile Boone Show from 1967. The episode title is "The Ordeal of Israel Boone". At approximately the 33 minute mark, Daniel (Fess Parker) has been bitten by a rattlesnake and is being helped walking by his son Israel (Darby Hinton). Daniel begins to fall, and when you look at the right side of the screen about two thirds of the way to the top, a white 1960's era car, and an older model blue stake body truck are plainly seen. It is more visible in slow motion or if you pause and advance slowly when Dan begins to fall.