Anna Schwartz died yesterday in Manhattan at the age of 96. She is best known for her collaboration with Milton Friedman, A Monetary History of the United States, 1867-1960. The book changed the way people regarded the Great Depression because it showed how far the money supply fell from 1929 to 1933. Monetary policy went from a neglected tool by Keynesians to the dominant tool in economic policy. Her obituary is here.
Randall Parker has an interesting book, Reflections on the Great Depression, in which he interviewed a number of famous economists who lived through the depression. Anna Schwartz was one of the economists in the book. Friedman's interview is also in the book.