My deep sense of gratitude extends especially to Professor Richard Pankhurst and Rabbi David Goldberg, both of whom have been good enough to read the whole text and have made most valuable suggestions, thus symbolising the fusion of Ethiopian and Jewish studies. I am also indebted to the following for their help and for their advice and kindness in various capacities, but I hasten to add that I accept sole responsibility for any errors of commission or omission which may inadvertently have crept into this book: David Appleyard, Professor A. F. L. Beeston, Batya Bier, Yona Bogale, John Bright-Holmes, Alan Crown, Charles Cotter, Itzhak Grinfeld, Ena Halmos, Arthur Irvine, Julian Kay, Sir Laurence Kirwan, Arthur Levinson, Hyam Maccoby, Professor Roland Oliver, Professor Chaim Rabin, Tessa Rajak and Professor J. B. Segal. In addition, I am most grateful to the librarians and staff of various institutions who have readily given me their assistance, especially the School of Oriental and African Studies (University of London) and also the Alliance Israelite Universelle in Paris, the Board of Deputies of British Jews, the Jewish Chronicle, Jews' College, the Wiener Library, the Office of the Chief Rabbi, University College London, and World ORT Union. Finally, I must thank Hilda Alberg for her expertise in preparing the typescript.