text: In 1939 Lamb married his first wife, Ursula Schäfer, a German student, who became a distinguished historian of Latin America (and assumed his last name). After her death in 1996, he married physicist Bruria Kaufman in 1996, whom he later divorced. In 2008 he married Elsie Wattson.
  Lamb died on May 15, 2008, at the age of 94, due to complications of a gallstone disorder.