Volume 1: General editor's introduction Sandra Spanier; Acknowledgments; Note on the text; Abbreviations and short titles; Foreword Linda Patterson Miller; Introduction to the volume Robert W. Trogdon; Chronology; Maps; The letters, 1907-1922; Roster of correspondents; Calendar of letters; Index of recipients; General index. Volume 2: General editor's introduction Sandra Spanier; Acknowledgments; Note on the text; Abbreviations and short titles; Introduction to the volume J. Gerald Kennedy; Chronology; Maps; The letters, 1923-1925; Roster of correspondents; Calendar of letters; Index of recipients; General index. Volume 3: General editor's introduction Sandra Spanier; Acknowledgments; Note on the text; Abbreviations and short titles; Introduction to the volume Rena Sanderson; Chronology; Maps; The letters, 1926-1929; Roster of correspondents; Calendar of letters; Index of recipients; General index.