It is almost impossible to overestimate the impact that Josef Andreas Jungmann, S.J., (1889-1975) and his work have had on the liturgical reforms which flowed from Vatican Council II. Here editors and authors honor the memory of one of the greatest liturgical scholars of the twentieth century, not just by reflecting on Jungmann's past achievements, but by highlighting the trajectories of his influence on the life of the Church even after his death and into the next century.