Mark Lindsey Bachelder, 17, was last seen September 22, 1974, surfing off Bryan Beach in Freeport, Texas. He was camping with a group of teenagers from Houston and went out about 6:00 a.m. that morning with friend David Hesterlee. Both boys used surfboards tethered to their ankles and neither returned by 11:00 p.m., prompting beach patrol notification and an extensive multi-day search.

Neither Mark, David, nor their surfboards were ever found; the pair is presumed lost at sea. Mark was last seen with a bright yellow surfboard marked Sunshine on the deck and an image of an Indian on a horse on the bottom. He is described as 5 feet 8 inches, 125 pounds, with brown hair and blue eyes, and had a prior back fracture. His disappearance remains classified as a lost/injured missing person case.

Does anyone who was on Bryan Beach that weekend or who knew the teens have information that could help clarify what happened?