I am very grateful to the editors of the Journal of Religious History for this most interesting assignment, especially to Associate Professor Carole Cusack, general editor, and Anna Haunton, tireless chief of the editorial office at the journal. Both have been exceptionally kind, patient, and perspicacious during the process of putting this special issue together. I am also grateful to the authors of the articles included here who have with equal parts grace, diligence, and poise responded to my sometimes unreasonable and precipitate requests. I am especially grateful to Christopher Buck, Omid Ghaemmaghami, Graham Hassall, Anthony Lee, and Will C. van den Hoonaard for assistance and support above and beyond the role of author. I would also like to thank Rebekah Zwanzig for her kind editorial assistance at various stages along the way. Finally, for his suggestions and encouragement, I am most grateful to Franklin Lewis. This special issue has been made better by the generous input of numerous anonymous reviewers. We are all most grateful for their comments, criticisms, and suggestions. We are also grateful to the Spiritual Assembly of the Baha'is of Springfield, Illinois who kindly made available the negative for the frontispiece (p. iv).