  Until 1991, when Notker Schneider’s monograph on Francis of Marchia’s cosmological ideas appeared (Schneider 1991), almost none of Marchia’s writings had been published and only Anneliese Maier had devoted serious and sustained attention to his thought (Maier 1940–1958). Since then, however, Nazzareno Mariani has published eight volumes of Marchia’s works: the Improbatio (Marchia 1993; also in Italian: Marchia 2001a), the Physics commentary (Marchia 1998), the Quodlibet (Marchia 1997, including a transcription of roughly a quarter of the Scriptum version of book I of the Sentences commentary and two questions from book II in appendices), the four Principia and the Prologue to his Sentences lectures, the Reportatio version of book I of the Sentences commentary (Marchia 2003, 2006a, 2007, 2009), and finally the Metaphysics commentary (Marchia 2012; in Italian: Marchia 2013a). While Mariani has edited the Reportatio of book I, Russell Friedman and Christopher Schabel have laid the foundations for the Scriptum edition (Friedman 1997, 1999; Marchia 1999, 2000, 2001b), and Girard J. Etzkorn has completed a working edition of the entire book. For book II, Etzkorn’s edition of the Vat. lat. 943 version is forthcoming, and the critical edition of the main redaction has already been published in three volumes by Tiziana Suarez-Nani, William Duba, Etzkorn, Emmanuel Babey, and Delphine Carron (Marchia 2008, 2010, 2013b). Duba is completing an edition of the versions of book III (Duba 2003–04; Duba-Schabel 2006–08), and Roberto Lambertini and Schabel have been untangling book IV (Lambertini 2004, 2006b; Marchia 2006b, 2006c; Katsoura-Papamarkou-Schabel 2006).