When Sally Field was first offered the role of Sister Bertrille, she refused it. The producers then offered the role to Ronne Troup, but Field had second thoughts and decided to go ahead and accept the role.
The series is based on the book "The Fifteenth Pelican" by Tere Rios, the maiden name of Theresa Versace. Her son, Humbert R. (Rocky) Versace, grew up in Washington, D.C. with Henry Martin (Hank) Buchanan, a brother of political commentator and perennial presidential candidate Patrick Joseph (Pat) Buchanan. Rocky Versace was posthumously awarded the Medal of Honor on July 8, 2002, for service in Vietnam.