Frank Jacobs, an inventive satirist who in his 57 years at Mad magazine mocked popular culture and politics, often in pitch-perfect verse and lyrics, died April 5 in Tarzana, CA. he was 91.

Mr. Jacobs brought a quick wit, a deep well of ideas, and a love of rhyming to Mad in 1957, becoming one of that smart-alecky humor magazine’s most prolific contributors, especially during the 1960s and ‘70s, when it was at the peak of its irreverence and its cultural influence. He wrote nearly 600 pieces for the magazine; numerous Mad paperbacks, and a biography of the magazine’s founding publisher, whom he described as “the last of the great fat eccentrics.” [Jack Davis illustration]