The video contains both movements of the work.
This work was written in 1959 for St. James' Church in New York City in commemoration of the church's 150th anniversary. Grunenwald was organist of the church of St. Sulpice in Paris from 1973-1982, succeeding his mentor, Marcel Dupré. I believe this work, originally published by H.W. Gray is, unfortunately, out of print.