Canadian Library Association: http://www.cla.ca
The Canadian Library Association/Association canadienne des bibliothèques is the leading national voice for the Canadian library and information community.
International School Librarian's Listserv is the source for this fantastic list of texts for all readers - including teachers.
Teacher Librarian Journal: http://www.teacherlibrarian.com/
Teacher Librarian, or TL as we're often called, is designed specifically for you, the library professional working with children and young adults.
Teacher Librarian Ning: http://teacherlibrarian.ning.com/
A community for teacher-librarians and other educators