I'm reasonably sure I can expect one person in particular to respond...
The paper I'm currently a fifth of the way through (I'm going to do it! Yay!) is a paper about the interplay of Christianity and Islam in North Africa over the past two thousand years.
In theory, anyway. In practice, at the moment, it's an introduction and half the history of the Coptic sect, but that's not really why I'm here today.
I'm here today because, as far as you can tell glancing through the AU library's DT10X shelf, the entire Ptolemaic history of Egypt lasted... about 57 years. And the Roman period that followed wasn't much longer.
By comparison, apparently the Sadat dynasty was one of the longest in Egyptian history.
Also, there's a two volume history of Egypt with ribbons holding them closed. I untied the ribbons and opened both books , but sadly, neither had anything on Ptolemaic Egypt. Also, opening the tomes failed to trigger the mummy's curse.
I think...