Does Anyone Know How to Count? The Backdrop to the Purim Saga
Rabbi Mendel Krasnjanski
The Fascinating History of Bavel, Paras and Madai. Seder Hadoros, Medrash Rabbah, R Tzadok Hakohen from Lublin, Rame M'panu, Arizal, Zohar, Maharsha, Rosh, Tosfos Source Sheet 1 Source Sheet 2 Source Sheet 3