John Castagno's Artists' Signatures and Monograms have become the standard reference source for galleries, museums, libraries, and collectors around the world. Whether used to identify, authenticate, or verify signatures and works of both well-known and little-known artists, Castagno's work has no equal. In the first volume, Old Masters Signatures and Monograms, 1400-Born 1800, Castagno provided identification for some 2,700 signature examples of more than 1,700 artists. In this second volume, there are more than 800 artists listed, with more than 1,100 signature examples. In addition, this volume now treats artists from the early 19th century, thereby broadening the time period covered in the first volume. The use of Old Masters II: Signatures and Monograms, An International Directory provides the researcher a reference tool not duplicated elsewhere—one that will save many hours of research.