PhD, Medieval History, Columbia University (2005)


History of medieval trade, business, and industry, definitions of regions and regional identity in Late Antiquity and the Middle Ages, epistolographic culture, and the idea and practice of law in medieval societies.


Selected Publications
  • Trade and Institutions in the Medieval Mediterranean: The Geniza Merchants and their Business World (Cambridge Studies in Economic History, Cambridge University Press, August 2012).
  • “Choosing and Enforcing Business relationships in the Eleventh-century Mediterranean: re-examining the ‘Maghribī traders’,” Past & Present, 215 no. 2 (August 2012): 3-40
  • “The Use and Abuse of the Geniza Mercantile Letter,” Journal of Medieval History 38 no. 2 (2012): 127-154.
  • “On reading Goitein’s A Mediterranean Society: a view from economic history,” Mediterranean Historical Review 26 no. 2 (2011): 171-186. (16 pages)*
  • “The Legal Persona of the Child in Gratian’s Decretum,” Bulletin of Medieval Canon Law 24 (2000): 10-53.
  • “Economic Activities,” in Cambridge History of Judaism, Volume 5: Jews in the Medieval Islamic World, Chazan and Rustow, eds. Cambridge University Press, forthcoming
  • Co-editor with Eve Krakowski, Special volume of Jewish History, “Documentary Geniza research in the twenty-first century.” Commissioned for 2014.

Digital Humanities
“The Digital Documentary Geniza.” Multi-institutional project to integrate images and transcriptions of documents from the ‘historical’ Geniza, develop guides and typologies to catalogue and describe unique kinds of material, develop publicly accessible and editable databases for personal names, place names, word lists, interpersonal networks, etc. Head of working group which includes Mark Cohen (Princeton), Marina Rustow (Johns Hopkins), Ben Outhwaite (Cambridge University), Miriam Frenkel (Hebrew University), and Phillip Ackerman-Lieberman (Vanderbilt), to develop miulti-year, multi-institutional grant.

Honors & Awards

2012 Charles V. Ryskamp Fellow of the American Council of Learned Societies. 2012-2015
Theme Member, School of Social Science, Institute for Advanced Study, Princeton, NJ 2012-2013. Theme: “Economy and Politics”
Mellon Foundation Member, School of Historical Studies, Institute for Advanced Study, Princeton, NJ, 2009-2010
Charles Ludwig Distinguished Teaching Award, 2009, School of Arts and Sciences, University of Pennsylvania
Fellow, Center for Advanced Judaic Studies, 2006-2007.
Postdoctoral Fellow, Stanford Humanities Fellows Program, Stanford University, 2005-2006