Listing 5,100 artists, with nearly 10,000 signatures, Castag gives approximately 25% more information about artists' full names and birth and death dates than any other directory; lists nearly 1,000 artists overlooked by the American Art Annuals; and includes many important 19th-century artists and table late 20th-century artists omitted in other indexed directories. With 600 listings of prominent Canadian and Latin American artists, and 900 listings of mograms, pseudonyms, symbols, etc. that would be unidentifiable without the use of the book.
John Castagno is a multimedia artist and sculptor. He has been an art researcher for the past forty years and also lectures on art and on art as an investment. Mr. Castagno's recent books include Abstract Artists: Signatures and Monograms, An International Directory, From 1900 (2007), American Artists II: Signatures and Monograms, From 1800 (2007), Artists' Monograms and Indiscernible Signatures II: An International Directory, From 1900 (2007), and European Artists II: Signatures and Monograms, From 1800 (2007).