I am a member of two online collectives. The first is http://www.designstyleguide.net/.
Find us on etsy by searching for "interiordesignteam". This group of artists is targeted specifically towards interior designers. Visit my portfolio at http://www.designstyleguide.net/sellerPortfolio.php?mi=165.
Any wholesale inquiries can be directed to email@example.com
I am also part of Cleveland Handmade. (Etsy tag "clevelandteam").
This group is full of local artists in all mediums. Check out the website to see where and when you can find group members selling their handmade goods this holiday season.