You may need to go a library and look at Standard and Poors for this information. Here is also some links with some information:
Exxon 's SEC information only goes back to 1994:
Your broker may be able to get you that information. I would contact your broker. I hope this answers your question. If not, then please reply. Thank you.
Why do you assume I have a broker? Nevermind, I already found the info elsewhere.