Typescript of a lecture delivered April 20, 1962, by Jacob Klein as part of the Formal Lecture Series. The typescript is an enlarged version of the lecture that was delivered.
Audio recording of a tutor panel discussion with Seth Appelbaum, Janet Dougherty, Jacques Duvoisin, Topi Heikkerö, and Nicholas Starr held on March 30, 2018 as part of the Dean's Lecture and Concert Series. Moderated by Raoni Padui.