This study is the companion volume to the new Arabic Edition of 'Abd al-Rahman al-Jabarti's imposing magnum opus 'Aja'ib al-Athar fi 'l-Tarajim wa-'l-Akhbar (The Marvellous Compositions of Biographies and Events). Moreh has made a rigorous comparison of the entire text as found in the most important manuscripts and in the printed editions.