Picture Books Originals features original artwork and prints from some of the most beloved children's book illustrators
The Purple Crayon a web page all about writing, illustrating, and publishing children's books. Lots of great information about picture books
The Society of Children's Book Writers and Illustrators has a great web page with lots of great pages
SCBWI Texas - Houston the Houston chapter page
Illustrator Gallery a great online gallery of illustrations from members of the Society of Children's Book Writers and Illustrators
Speaker's Bureau your class can meet their favorite author or illustrator. Can be searched regionally.