by 
Professor Emil J. Polak, a 2009 Vatican Film Library Mellon Fellow and retired faculty member of the City University of New York, has completed the final volume of his Medieval and Renaissance Letter Treatises and Form Letters with the publication of vol. 3, A Census of Manuscripts Found in Albania, Austria, Bulgaria, France, Germany, and Italy (Leiden: Brill, 2015). Among other libraries, this volume lists two-hundred manuscripts in the collections of the Biblioteca Apostolica Vaticana. Begun in 1977, the whole work covers almost nine-hundred libraries and archives in thirty-six countries and provides a repertory of Latin manuscripts of the ars dictandi and ars epistolandi from the eleventh century to about 1700. Earlier volumes include (vol. 1) A Census of Manuscripts Found in Eastern Europe and the Former USSR (Leiden: Brill, 1993) and (vol. 2) A Census of Manuscripts Found in Part of Western Europe, Japan, and the United States of America (Leiden: Brill, 1994).
