#1 Peter T. O'Brien is the author of God's Mission and Ours. However, at the moment those names should not be combined due to the existence of:
#2 Peter O'Brien 1960-, Texas Professor of Political Science and author of Beyond the Swastika, and
#3 Peter O'Brien, Australian author of Understanding education : contexts and agendas for the new millennium.
#4 O'Brien, Peter, author of United States of arson.