David Allan Oliker was 18 when he was killed in Santa Cruz, California, on February 10, 1973. He and three other teenagers—Robert Michael Spector, Brian Scott Card, and Mark John Dreibelbis—were camping in Henry Cowell Redwoods State Park when Herbert Mullin, posing as a park ranger, confronted them and ordered them to leave. After they refused, Mullin left and returned the next day and shot them to death. Their bodies were found on February 17, 1973.

Mullin later confessed to a series of killings and said he believed the murders would prevent earthquakes; his mental state and those justifications were central at trial. He was linked to Oliker and the other victims during the investigation and was convicted of multiple counts of murder and sentenced to life in prison.

Does anyone have memories of David Allan Oliker or the others from Santa Cruz in 1973, or information about the campsite that could add to the record?