The document summarizes the mid-century American anti-vaccination movement as uncovered in the secret archives of the American Medical Association. It describes key figures like Morris Fishbein who opposed the movement in its early years and organizations like the National Health Federation that later spread misinformation linking vaccines to autism despite a lack of scientific evidence. The movement underwent different periods from its origins in the early 20th century through later debates over vaccines in the 1970s-2000s.