Harold refers to Dartmouth as a men's school. They wouldn't admit women as full-time students and undergraduate degree candidates until 1972.
Harold Baxter's ginger-Red hair Friend "Jeff" was painting the corner dull-white picket fence of what was the "I Dream Of Jeannie" House - and used in an episode of Hazel titled "Stop Rockin' Our Reception" (Feb 18, 1965.) In that episode, Harold's CB Friend was a blond boy name "Bruce" (played by David Alan Bailey.)