If you live in Madison, Wisconsin and work with children of any age, you might already be aware of the incredible resource librarians and educators have at their fingertips: The Cooperative Children's Book Center (CCBC). The CCBC is a unique examination, study and research library of the School of Education at the University of Wisconsin-Madison. The CCBC’s noncirculating collections include current, retrospective and historical books published for children and young adults.
They have extensive knowledge and expertise on intellectual freedom issues as they relate to children's and teens' access to materials in libraries and classrooms: check out their Web site.