Where to find Cotton Cavas Prints?

I'm making montessori by hand's reading pillow

http://montessoribyhand.blogspot.com/2007/07/reading-pillow-pattern.html

 and would like some unique, beautiful, maybe even funky cotton canvas to use on it. My JoAnn's is not impressive with the home decor fabrics that are comparable to cotton canvas. I've looked at www.reprodepot.com and www.superbuzzy.com and they have some cool stuff, but not quite right (too funky, too childish).

Any suggestions on where to find some good cotton canvas prints (that aren't over the top expensive) ?

I love Jesssica Jones' prints at j caroline creative:

http://www.jcarolinecreative.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=JC&Category_Code=1009a

They have some here at Sew Mama Sew.
http://www.sewmamasew.com/ccp0-catshow/1HOMEDEC.html

try also www.fabric.com - they usually have several great printed canvases/heavy twills.  i've gotten several over the years from them for pillows, cushions and handbags.