I was asked by Kapera on DeviantArt if I wanted my Myst illustration in the 2013 Mysterium Convention Book, which sounds really interesting. I've never seen one and I can't really comment on how "big" such a thing is, but I'm certainly interested in being part in anything that brings my illustrations out to more viewers.
I've been asked such things now and then since I started my Digital Myst Book, but very few has come to any sort of fruition, so I always take these offers with a grain of salt. But she did followup my questions so maybe something could come out from this.
She wants me to send her some originals along with some noted about each, which I'll gladly do. I'll report back when I know more
Doesn't matter. If they want your illustrations and are willing to pay...
'From small acorns mighty Oak trees grow' if you get my gist.