This is what I got from another group I'm on. You might be interested in doing this.
1000 Handmade Greeting Cards --
Call for Entries12/17/2007
Publishing Opportunity SEEKING ARTISTS AND CONTRIBUTORS THE SPONSOR
Rockport Publishers/Quarry Books is an internationalpublisher of high-quality visual and idea books for design professionals and creative enthusiasts--crafters, artists, and designers.
THE BOOK We are seeking project contributors for an upcoming book tentatively titled 1000 Handmade Greeting Cards.
The book will feature handmade greeting cards using a variety of media and styles. The emphasis is on the handcrafted card--computer-generated cards will not be considered.