1962 Death Charles-Jean baron de la Vallee-Poussin, Belgian engineer, dies at 96 1938 Death Louis EJM de la Vallee-Poussin, (The Way to Nirvana), dies at 69 1869 Birthday Louis EJM de la Vallee-Poussin, Belgian indologist 1866 Birthday Charles-Jean Vallee-Poussin, mathematician, d'analyse
