David Ketchum, comedian, actor, and writer best remembered as Agent 13 on Get Smart and Spiffy on Camp Runamuck, has died at 97 on August 10, according to Variety. A familiar face in 1960s sitcoms, Ketchum appeared on I’m Dickens, He’s Fenster, The Mary Tyler Moore Show, and Camp Runamuck. One of his most beloved roles was Agent 13, the...