List of Famous people who are 91

Harrison Colyar White is the emeritus Giddings Professor of Sociology at Columbia University. White played an influential role in the “Harvard Revolution” in social networks and the New York School of relational sociology. He is credited with the development of a number of mathematical models of social structure including vacancy chains and blockmodels. He has been a leader of a revolution in sociology that is still in process, using models of social structure that are based on patterns of relations instead of the attributes and attitudes of individuals.

Patricia Joan Keller McCormick is a retired American diver who won both diving events at two consecutive Summer Olympics, in 1952 and 1956. She won the James E. Sullivan Award for best amateur athlete in the US in 1956 – the second woman to do so.

Claude Jasmin was a Canadian journalist, broadcaster, and writer.