[5] He continued his studies at the Catholic University of America in Washington, D.C., where he earned a Bachelor of Sacred Theology degree in 1907.

[1] Following his return to New York City in 1909, Mitty briefly served as a curate at St. Veronica Parish in the West Village of Manhattan.

[4] Mitty was released from military service in 1919, and subsequently assigned as pastor of Sacred Heart Parish in Highland Falls, New York.

[2] In addition to his pastoral duties, he served as a Catholic chaplain at the United States Military Academy at West Point from 1919 to 1922.

His predecessor had resorted to taking out new loans to pay the interest on previous debt, and left the diocese owing over $300,000.

In 1932 Pius XI appointed Mitty to be the coadjutor bishop to the Archdiocese of San Francisco and named him titular archbishop of Aegina.

He was installed as archbishop and presented the pallium, the symbol of a metropolitan bishop, at a Pontifical High Mass at the Cathedral of Saint Mary of the Assumption in San Francisco in September of that year.

[12] John Mitty died of a heart attack at Saint Patrick's Seminary in Menlo Park, California on October 15, 1961.