Correspondence, notes, church documents, and printed material; concerning Bornemann's work as a leader of the German American Catholic Congresses and his interest in organizations of German American Catholics such as the Staatsverband Societies of Pennsylvania and Ohio, the Catholic Central Verein, and the Amerikanish Deutschen Priester Vereins. Correspondents include J.N. Enzlberger, William Faerber, Joseph Schroeder, and bishops Leo Haid, OSB, and P.J. Hurth, CSC.