Children's illustration gallery and Agency sites

kidshannon.com
http://bareps.com/

http://www.illustrationmundo.com

http://www.childrensillustrators.com/

http://www.illoreps.com/

http://www.writershouseart.com/

http://www.larkworthy.com/

http://www.heartagency.com/

http://www.book-by-its-cover.com/category/childrens

http://www.lindgrensmith.com/

http://www.plumpuddingillustration.com/

http://www.mbartists.com/

illustrationfriday.com

http://www.prospectagency.com/

Penguin Art Director Giuseppe Castellano, recommended these websites in SCBWI Oakland conference. He also told us that he often goes to Comicon, too.  :)
Thank you Giuseppe Castellano!

additional link I found from SCBWI resources.
www.agentquery.com