1 I make no claim to exhaustiveness in this overview; I invite you to explore the bibliographies at the back of this collection. I would like to thank the specialist librarian Brian Vetruba (University of Minnesota, Wilson Library) for his generous help in compiling the lists of books, articles, and dissertations, and Helga Thorson, for contributing additional items to the list.

2 See Rick McCormick’s article for a description of the numerous awards this book received.