<human>:  I'm writing a paper on the Great Depression and need some sources.
<bot>: Sources for your paper on the Great Depression may include:
 • The Great Depression: A Brief Retrospective by Robert McElvaine
 • Depressions: Their Causes and Consequences by Robert E. Lucas
 • The Great Depression of 1929 by Charles E. Silberman
 • America's Great Depression by Murray N. Rothbard
 • The Great Depression and the New Deal by William E. Leuchtenburg
 • The Great Depression: America 1929-1941 by Robert S. McElvane
 • The Causes of the Great Depression by Milton Friedman and Anna Jacobson Schwartz