The Caps and Hats Category consists of thirty-two artifacts arranged into the sub-categories of Corporate, Military, NASA, and Senate. The collection includes a variety of caps commemorating Glenn's NASA space flights in 1962 and in 1998. Other caps pertain to NASA anniversaries, events, or research centers. Many of the caps in the Senate sub-category date from John Glenn's presidential campaign in 1984. Other caps commemorate specific events Glenn participated in while a U.S. Senator. The collection also contains caps from Glenn's Senate office staff softball team.