American Academy of Pediatrics recommended vaccination schedule:

http://www.aap.org/immunization/izschedule.html

Vaccine Information Statements:

http://www.michigan.gov/mdch/0,1607,7-132-2942_4911_4914-138197--,00.html#Vaccine_Information_Statements_(VIS)

HealthyChildren.org:

http://www.healthychildren.org

Helen Devos Children's Hospital:

http://www.helendevoschildrens.org/