In 2021, Pegasus Books published The Fires of Philadelphia: Citizen-Soldiers, Nativists, and the 1844 Riots Over the Soul of a Nation.

For some previews, see

• “Nativist Riots of 1844,” Encyclopedia of Greater Philadelphia, first posted 2013.
• “Lewis Levin Wasn’t Nice,” Tablet Magazine, 22 October 2018.
• “The Fires of Philadelphia: Citizen-Soldiers, Nativists, and the 1844 Riots Over the Soul of a Nation.” Historical Society of Pennsylvania. June 2021. YouTube.

• “The Fires of Philadelphia: Citizen-Soldiers, Nativists, and the 1844 Riots Over the Soul of a Nation.” With Professor Dan Horner. National Archives. July 2021. YouTube.

I wrote my first work on riots decades ago:

• Zachary Moses Schrag, “Nineteen Nineteen: The Boston Police Strike in the Context of American Labor” (A.B. thesis, Harvard University, 1992). (PDF version, March 2012)