Guy Leber, an Italian-Swiss painter from Louisville, Kentucky, painted the ceiling of the apse at Saint John with "The Angels of Glory" (white-robed angels and halo-crowned seraphs). L. Chovet of Paris, France, provided paintings for the Stations of the Cross. In 1971, on the centennial anniversary of its dedication, the interior of the church was refurbished with the generosity of Monsignor Charles P. Koster. In the confusion following the Second Vatican Council, the communion rail was removed, the altar was repositioned to allow the priest to face the congregation, and the baptismal font was moved to the left transept.