Warren Joseph Niederfringer was 23 when he was last seen in Newington, Connecticut, on June 1, 1972. He was reported to be starting a trip that might have taken him to either Boston, Massachusetts, or North Carolina—destinations that are far apart and add confusion to his intent. At the time he disappeared he was driving a yellow 1960s Dodge walk-in van that had formerly belonged to the Connecticut Light and Power Company; the van also vanished and was never recovered.

Warren was described as a white male, brown hair, blue eyes, about 5 feet 9 inches to 5 feet 10 inches tall, weighing 140 to 150 pounds, and noted to have a mustache when he went missing. Very few details about his movements that day have been made public, and there was no further contact after June 1. The case remains open and unsolved.

If anyone knew Warren, saw that distinctive yellow Dodge van in 1972, or has information about his possible travel toward Boston or North Carolina, please come forward.