Replica Superman The Movie Cape Wanted

Hi
can anyone supply me with any Chris Reeve Superman cape info?

I'd like to know what material it was made out of and any color/dyeing info. Any source for an accurate cape pattern and/or its dimensions, and a scan or BMP of the "S" emblem on the cape (to scale) would be appreciated as well.

Any URL's to "costume making" forums would be great too.

Thanks in advance,
Bill McCarthy