On June 9, 1970, Bob Dylan traveled to Princeton University (where he’s seen here with Coretta Scott King) in New Jersey to pick up an honorary Doctorate of Music. It was not a happy experience—Dylan, who’d just turned 30, was in a bad state, and the Ivy League vibe did not agree with him. He later wrote a song about the experience, titled “Day of the Locusts,” which came from what he thought were the cries of the insects on a hot New Jersey day. But it wasn’t the locusts who were singing their sweet melody for Dylan. It was the Brood II cicadas. (Hat tip to Michael Lemonick for this.)