I just completed a 2 day workshop with Jim and it's one of the best investment I ever made in photography. Jim is a wealth of information - he imparted to me not only in carbon printing but gave me hints and tips in all aspects of photography. I'm in debted to him because the knowledge I received from Jim was worth more than anything I can gain by myself.
I highly recommend on keeping tabs with Jim for his availability and sign up for his workshops. Don't be afraid to call him because he is very reasonable and accomodating. I've been enlightened in carbon printing by one of the few experts. PM me if you have questions on my experience.
Thank you so much Jim.