Robert Franco Rivera was 45 when he was last reported seen on July 28, 1977, in Oxnard, California, but his last confirmed contact with family was much earlier. The family received a letter from him in 1963 from an Oxnard address, and there has been no verifiable communication or trace of his whereabouts since then.

Rivera is described as a Hispanic male, 5 feet 6 inches tall, about 140 pounds, with black hair and brown eyes. The circumstances of his disappearance are unclear; the case remains open with the Oxnard Police Department and is listed in NamUs.

If anyone knew Robert Rivera, lived near him, or remembers seeing him in Oxnard in the 1960s or 1970s, please share what you know with investigators.