You can purchase these through
www.marcopaper.com - they are in Ohio.
I bought mine directly from Suze Weinberg as she is here in New Jersey. Her web address is
www.schmoozewithsuze.com. She also has great techniques for the melting pot on her site.
If you live near Freehold, NJ where her studio is she frequently offers classes to those on her email list (you can sign up on her website) who live in NJ and surrounding states (PA, DE, MD, NY, etc).