Jan 29, 2016 The historian's puzzle: various differences between copies of printed periodicals that ought to be similar. The case of *Dūstur* Jan 19, 2014 The puzzle continues II: in addition to *al-kabīr* and *al-ṣaghīr*, *al-Muqtaṭaf* published slightly different editions in Beirut and Kairo Aug 19, 2013 The puzzle continues: *al-Muqtaṭaf* was printed in two different and unmarked editions Jan 19, 2013 Solution to the historian's puzzle? Jan 12, 2013 Update to the historian's puzzle Dec 29, 2012 The historian's puzzle: various differences between copies of printed periodicals that ought to be similar Sep 2, 2012 Project Jaraid: our new chronology of nineteenth-century Arabic periodicals is online