In the summer of 1966, one year after the conclusion of the Second Vatican Council, a group of nineteen Roman Catholic priests met clandestinely in a church hall in a suburb of Pittsburgh to discuss forming an independent group of ordained clergy. Fearful that meeting publicly might be viewed as a threat to the authority of the local bishop, thus potentially risking sanctioning from him, they used numbers, not names, when circulating the minutes of the first two meetings. Once the word spread...