> Here's another possibility....

> "Extraordinary Popular Delusions and
> the Madness of Crowds" by Charles
> Mackay.

I just found out you can read this online for free.... It was written in the 19th century.

For example, "Memoirs of Extraordinary Popular Delusions and the Madness of Crowds" can be found online here...
http://www.econlib.org/library/Mackay/macExContents.html

and "Extraordinary Popular Delusions And The Madness Of Crowds" can be found online here....
http://www.litrix.com/madraven/madne001.htm

- Dien