S&P 500
The S&P500 (.INX) tracks the top 500 large-cap US common stocks
http://www.google.com/finance?q=.inx

1920-2009

http://www.epips.com/s&p500.html

1973 and 1979 Oil Crisis and Stagflation

http://www.epips.com/s&p500/1970s-oil-crisis.html

1995-2000 The Making of the First Dot-Com Bubble

http://www.epips.com/s&p500/1995-2000-dot-com-era.html

2000-2002 Dot-com Bubble Collapse

http://www.epips.com/s&p500/2000-2002-dot-com-bubble.html

2007-2009 Banking Crisis

http://www.epips.com/s&p500/2007-banking-crisis.html