Thank you Robert Cpt.Dogfruit for your responses.
I have found the Intel website that contained a list of all their IO Shields:
and found that a link on that page went to "Industry Educations's" website where one can be purchased for a few dollars plus postage. The site is not accepting the security check for my credit card, but that is a problem for another day.
The motherboard in question was bought at an auction for a local distributer who went broke recently. The board was from an OEM bulk box. Somewhere the manual, disk and IO shield got separated. I did ring the auction house to find out if there where any left over, but all had been cleared out by then. So this is not an Intel problem and I would not feel right in asking for another one for free.