Society of Illustrators - For the illustration major. Undergraduate students should join for professional information and contacts. Has a tab for "students" which gives information and advice to high school students, college students, and current illustrators who are pursuing the field.
Association of Medical Illustrators - Good career information on what medical illustration is, how to become a medical illustrator, certifications, salary statistics and more. Click on "About AMI" to access much of this information.
Society of Children's Book Writers and Illustrators - The SCBWI acts as a network for the exchange of knowledge between writers, illustrators, editors, publishers, agents, librarians, educators, booksellers and others involved with literature for young people.
National Cartoonist Society - Advice from seasoned cartoonists on breaking in to the profession, as well as information on regional chapters of the society.