John J. Kelley became the first and currently lone B.A.A. club member to win the Boston Marathon. In addition, from 1946 to 1967, Kelley was the only American to win the race.
1972 - Women Official Entrants in Marathon
Although Bobbi Gibb was the first woman to complete the Boston Marathon in 1966, it was not until the 1972 Boston Marathon that women could become official entrants due to a change in AAU rules.