Maurice de BROGLIE (1875-1960) physicist. L.A.S., Paris, February 8, 1947, [to Jean Crussard]; 2 1/4 pages in-12 (mourning). He has learned of his relapse and regrets that "you have been obliged to give up the career in which you started so well. Perhaps it will be possible for you, after the events in Austria are over, to join Louis Leprince-Ringuet's group, which is brilliantly pursuing research on cosmic rays in conditions of climate and altitude that you will no doubt be able to live with..."...