Thornton Wilder and Amos Wilder: Writing Religion in Twentieth-Century America. South Bend: University of Notre Dame Press, 2011,  xi + 226.

"Beneath Iërne's Banners": Irish Protestant Drama of the Restoration and Eighteenth Century. South Bend: University of Notre Dame Press, 1999, x + 166 pp.

Without God or Reason: The Plays of Thomas Shadwell and Secular Ethics in the Restoration. Bucknell University Press, 1993, 201 pp.

An Old-spelling Anthology of Drama in English from the Middle Ages to the Early Twentieth Century (forthcoming, The Catholic University of America Press) approximately 1005 pages.

Irish Plays of the Seventeenth and Eighteenth Centuries (scholarly edition), co-edited with Kevin Donovan (Bristol and Tokyo: Thoemmes Press, 2003): vol. 1, xlii + 462; vol. 2, v + 543. 

‘Poland is not yet Lost’: Heroic and Tragic Tales for the Polish Diaspora (Poznan: Adam Mickiewicz University Press, May 2004), photographs by Liz Lynch, 122 pp.
 
Three volumes in The Dictionary of Literary Biography on twentieth-century America drama