Costello, J. A., & Fitzpatrick, R. (1956). Address of the Honorable John A. Costello, Prime Minister of Ireland, delivered before the Senate of the United States and distinguished guests, March 15, 1956, together with the Fitzpatrick letters of 1777-1778. Washington: U. S. Govt. Printing Office.

Costello, John Aloysius, and Richard Fitzpatrick. Address of the Honorable John A. Costello, Prime Minister of Ireland, Delivered Before the Senate of the United States and Distinguished Guests, March 15, 1956, Together With the Fitzpatrick Letters of 1777-1778. Washington: U. S. Govt. Printing Office, 1956.

Costello, John Aloysius, and Richard Fitzpatrick. Address of the Honorable John A. Costello, Prime Minister of Ireland, Delivered Before the Senate of the United States and Distinguished Guests, March 15, 1956, Together With the Fitzpatrick Letters of 1777-1778. Washington: U. S. Govt. Printing Office, 1956.