Spalek, J. M., Ash, A., & Hawrylchak, S. H. (1978). Guide to the archival materials of the German-speaking emigration to the United States after 1933 =: Verzeichnis der Quellen und Materialien der deutschsprachigen Emigration in den U.S.A. seit 1933. Charlottesville: Published for the Bibliographical Society of the University of Virginia by the University Press of Virginia.

Spalek, John M., Adrienne Ash, and Sandra H. Hawrylchak. Guide to the Archival Materials of the German-speaking Emigration to the United States After 1933 =: Verzeichnis Der Quellen Und Materialien Der Deutschsprachigen Emigration in Den U.S.A. Seit 1933. Charlottesville: Published for the Bibliographical Society of the University of Virginia by the University Press of Virginia, 1978.

Spalek, John M., Adrienne Ash, and Sandra H. Hawrylchak. Guide to the Archival Materials of the German-speaking Emigration to the United States After 1933 =: Verzeichnis Der Quellen Und Materialien Der Deutschsprachigen Emigration in Den U.S.A. Seit 1933. Charlottesville: Published for the Bibliographical Society of the University of Virginia by the University Press of Virginia, 1978.