My mother passed away and I found three stock certificates for some Sears, Dean Witter Discover, and Morgan Stanley and I was wondering how I could find out what they are worth and how to cash them in. The Sears stock certificate was purchased on May 9, 1988 for 8 shares and the Dean Witter is for three shares purchased January 14, 1997 and Morgan Stanley is for six shares purchased on January 26, 2000. Any help would be appreciated.