I found this link on the American Academy of Pediatrics website, you can order hard copies of several reports and informative pamphlets on vaccination--FREE!
Also, a report on the links between vaccines and autism. Studies "...consistently provided evidence that there is no association between thimerosal-containing vaccines and autism."
On Multiple vaccines at one time: A number of studies have been conducted to examine the effects of giving various combinations of vaccines simultaneously. In fact, neither the Advisory Committee on Immunization Practices (ACIP) nor the American Academy of Pediatrics (AAP) would recommend the simultaneous administration of any vaccines until such studies showed the combinations to be both safe and effective. These studies have shown that the recommended vaccines are as effective in combination as they are individually, and that such combinations carry no greater risk for adverse side effects. Consequently, both the ACIP and AAP recommend simultaneous administration of all routine childhood vaccines when appropriate. Research is under way to find ways to combine more antigens in a single vaccine injection (for example, MMR and chickenpox). This will provide all the advantages of the individual vaccines, but will require fewer shots.