LeMans71

I've posted this a couple of other places, without any luck. Forgive me if you're sick of seeing it, but it finally dawned on me that if anyone would know the answer, it would be the 924 folks.

Doing some decorating in my garage, which as of last night is home to an '89 944S2 (woooooohoooooooo!!!). I want a poster of its most famous ancestor:

http://www.cantonia.com/images/944gtp.jpg

I know Porsche used this photo in a magazine ad when introducing the 944 (and I hate to admit it, but I remember seeing the ad in Road&Track when I was in high school). Someone, somewhere MUST have made a poster from it, but I can't find one. Any ideas?

Thanks,
Scott