Without the co-operation of many persons, an undertaking like this cannot be accomplished. It is most pleasant to record my particular appreciation for those who, by furnishing me with the result of their reading in special fields, added to the completeness of the work. Prof. Chester N. Gould of Chicago gave me free access to his rich notes on the Old Norse saga material; Miss Hortense Braden of Indianapolis permitted me to use her classification of incidents in African tales; Miss Thelma James of Detroit turned over to me the manuscript of her classification of the Alphabetum Narrationum, as did Dr. Luella Carter of her classification of the tales in the Scala Celi and Prof. C. B. Cooper of his notes on Burton's Arabian Nights and the Kathā Sarit Sāgara. Mr. Bjorn Winger of Indianapolis gave me most valuable help by excerpting motifs from several difficult sources, notably from about half of Feilberg's Bidrag til en Ordbog over Jyske Almuesmål. When I excerpted the second half of the work, I realized the magnitude of this kindness so freely given.
Prof. Ernest J. Simmons was good enough to supplement my inadequate knowledge of Russian, so that the motifs in a certain Russian work could be included. Prof. John W. Spargo, of Northwestern University, has in a number of cases enriched the classification from the fields of his special interest. Lastly, must be mentioned a whole group of students of my seminar in the Folk-Tale, who for some years were most generous of their time in excerpting important works.
For the new edition the help for which I am very thankful has continued on all sides through the years. First must be mentioned those who have devoted great labor to the preparation of indexes of special fields and have thus made possible this revision — Jonas Balys, Ernest W. Baughman, Inger Margrethe Boberg, Laurits Bødker, Åke Campbell, Joseph M. Carrière, J. Wesley Childers, Tom Peete Cross, Aurelio M. Espinosa, Paul Delarue, Helen L. Flowers, Theodor H. Gaster, Verrier Elwin, Herbert Halpert, Hiroko Ikeda, William Hugh Jansen, John Esten Keller, May A. Klipple, Waldemar Liungman, Maria de los Angeles Moreno Enriquez, Dov Neuman, Anton Nyerges, Sister Marie-Ursule, Warren E. Roberts, D. P. Rotunda, Archer Taylor, Toni Unger, Maria Alice Moura Pessoa, and Bjorn Winger.
To these may be added a group from the University of South Carolina who have listed motifs from various writers of the French Renaissance — J. Woodrow Hassell, Jr., A. M. Hardee, Cecilia P. Irwin, Sarah C. Pinkney, F. C. Perry, Kenneth Fay and Andrew H. Yarrow.
Aside from those mentioned as having completed motif-indexes, a number of my students have excerpted motifs to the number of many thousand from various fields — Richard Bartel (Greek drama), Kenneth Clarke (Africa), Bacil F. Kirtley (Oceania), Dorothy Thompson Letsinger (Sir Thomas Malory), W. S. Mayer, Jr. (Troy
