Thank you all for your gracious comments.
Looking in pastel Artist International, I see that the actual name of Art Spectrum's paper is 'Colourfix'. The website is
www.artspectrum.com.au and the US contact is
[email protected]
They make a primer in different colors, too so you can choose your own surface. I happened to find the paper in a local art supply store, it was about $7 per sheet. You might try the big mail order catalogues. BTW Sennelier's La Carte is available in most of the art supply stores here, and also through the catalogues.
Lon, nope, no fixative. I keep meaning to get a set of pastel pencils but never seem to get to it! I typically sketch the intial drawing with soft charcoal pencils.
Chris