William P. Ferguson was 50 when he vanished after attending his brother’s funeral in Denver in the winter of 1961. He was last seen at a bar on Larimer Street between 18th and 19th streets, wearing a white shirt, a jacket and dress pants.

Ferguson was about six feet tall, roughly 170 pounds, with brown hair and brown eyes. He wore glasses and had a tattoo of his initials on his left arm. His disappearance after the funeral left few leads; the investigation is now handled by the Arapahoe County Sheriff’s Office and the case has been entered into national missing-person databases.

Very little else is publicly known about his movements that day or any sightings afterward. Does anyone have memories, family knowledge, or tips about William’s last day in Denver that could help investigators?