Citigroup Website
http://www.citigroup.com

White House announcement of 2004 Presidential Medal of Freedom recipients.
http://www.whitehouse.gov/news/releases/2004/06/20040618-13.html

“Secret History of the Credit Card,” PBS Frontline Interview with Walter B. Wriston
http://www.pbs.org/wgbh/pages/frontline/shows/credit/interviews/wriston.html

CUNY-TV Oral History of New York City Fiscal Crisis of 1970's Interviews by Jack Bigel
Walter Wriston, Chairman of Citibank during the fiscal crisis (Interview - 1:09:25)
http://www.newman.baruch.cuny.edu/digital/2003/amfl/oral_histories.htm

Walter B. Wriston, Wikipedia
http://en.wikipedia.org/wiki/Walter_B._Wriston

Zweig, Phillip L. "Wriston: Walter Wriston, Citibank, and the Rise and Fall of American Financial Supremacy." New York, NY: Crown, 1995.

Cleveland, Harold van B. and Thomas F. Huertas. "Citibank, 1812-1970." Cambridge, MA: Harvard University Press, 1985.