Need fmv Westinghouse stock 01/09/75

Your best bet is the company itself; they maintain the records forever.

Also, I believe there ARE websites that allow you to look up such information.

The problem here is that Westinghouse disappeared back in 1997 when it reconfigured itself to be CBS Broadcasting, and most sites that provide free historical data don't have capabilities to show stock proces for companies no longer in existence. If you search on their old ticker symbol "WX" you get data for an entirely different company.

To the OP: I suggest contacting CBS Corp Investor Relations to ask how to get this information. See: CBS Corporation | Contact