The name of the company is Port Plastics - they have an office here in Denver. They were real easy to work with.
Here is their website:
http://www.portplastics.com/plastics/laminates/NEMAGradeCECanvasPheATL.html
Minimim order was 4ft. According to the page I referenced above, it is available in diameters from 1/16" to 6".
You will have to see 1) if there is a sales office in your area
http://www.portplastics.com/aboutus/index.htmland 2) contact them for a price. They will probably have to order it for you, but mine took about a week or so.
Glad I can give back a little something to everyone, given that I have taken so much from here.
Gary