Abba Gurion: This is also called 'Agadta deMegilta' or 'Midrash (rabbinic interpretive commentary) Megillah', as it is based on the Book of Esther. Rabbi Aharon Yellinek published it in 'Beit HaMidrash', Volume 1 (Leipzig, 1873) based on a manuscript found in the Hamburg library collection, Bundle 37. However, in this manuscript, entire sections are missing and other sections are abbreviated with the term "etc." Rabbi Shlomo Buber used this Midrash based on an old manuscript hidden in Rome and compared it with five other manuscripts. He printed it along with 'Midrash Panim Acherim' and 'Midrash Lekach Tov', all three on the Book of Esther, under the title 'Sifrei d'Agadta' (Vilna, 1877). Refer to the entry 'Abba Gurion' in the 'Otzar Yisrael' encyclopedia and the introduction by Rabbi Shalom Buber in 'Sifrei d'Agadta'.