Don Walsworth

This big-time booster heads up Walsworth Publishing, a Missouri-based publishing company that specializes in high school yearbooks. He played forward on the basketball team during his time at Mizzou, and after making his millions in the yearbook biz, Walsworth has given back generously. In 2013, he gave an $8.3 million gift to the school's athletic program. He's also an active political giver, usually supporting Missouri Democrats.