D'Agostino references two other relevant works that support his theory of a dialogue between the Europeans and the Americans. See: John T. McGreevy, Catholicism and American Freedom: A History (New York: W. W. Norton and Co., 2003) and Matteo Sanfilippo, L'Affermazione del cattolicesimo nel Nord America: Elite, emigrant e chiesa cattolica negli Stati Uniti e in Canada, 1750-1920 (Viterbo: Sette Cittá, 2003).
