Robert B. Barsky and J. Bradford DeLong (1990), "Bull and Bear Markets in the Twentieth Century," Journal of Economic History 50: 2 (June), pp. 1-17.: Archive Entry From Brad DeLong's Webjournal
Robert B. Barsky and J. Bradford DeLong (1990), "Bull and Bear Markets in the Twentieth Century," Journal of Economic History 50: 2 (June), pp. 1-17.
http://www.j-bradford-delong.net/pdf_files/Bull_and_Bear.pdf
