We conducted most of our research at the Bancroft Library, University of California, Berkeley; Beinecke Rare Book and Manuscript Library, Yale University; Huntington Library and Art Gallery; Los Angeles Public Library; New York Public Library; New York University Library; Princeton University Library; San Francisco Public Library; and O. Meredith Wilson Library, University of Minnesota, Minneapolis. We are grateful to librarians at the Milwaukee (Wisconsin) Public Library; Arizona State University (Tempe); St. Cloud (Minnesota) State University; and New York Public Library for their assistance. Leslie Crabtree and Alan Gullette assisted in obtaining some of the material used in preparing this volume. John D. Beatty, Lawrence I. Berkove, Jonathan Johnson, and Gary Pokorny provided information for some of the annotations.
We are grateful to the Bancroft Library, University of California, Berkeley, for permission to print extracts from “From which to select and prepare additions to ‘The Devil’s Dictionary’ if needed”; and to the Huntington Library and Art Gallery, San Marino, California, for permission to quote extracts from the typesetting copy of The Devil’s Dictionary.