I am looking for a historical stock price.  My question gets tricky
because the company has gone out of business.  The company is
Continental Illinois National Bank and Trust Company (symbol: CIC; was
listed on the NYSE) and the date I need the closing price for is March
22, 1977.

Grace803 --

Your problem is a common one, since most of the popular stock listing
sites (like BigCharts.com and Yahoo! Finance) only go back about 15
years -- and de-list companies that have disappeared from the stock
exchanges.

The best sources for old stock quotes are microfilm versions of the
Wall Street Journal or the New York Times online.  The historical NY
Times collection is available via Proquest, a fee-based service that's
provided for free at major public libraries.  That's where the
following information about Continental Illinois Corp. comes from --
the Wednesday, March 23, 1977 NY Times (with March 22's closing
prices):

Continental close: 48 1/2, -3/4
High: 49 1/4
Low: 48 1/2
1977 range: 48 1/4 -- 54 7/8

There were 17,700 shares traded that day.

Best regards,

Omnivorous-GA