Sultan, Jem (Holberton, William). Coins of the Ottoman Empire and the Turkish Republic: A Detailed Catalogue of the Jem Sultan Collection. (Thousand Oaks, CA, 1977).
of the famous "Jem Sultan" collection of William Holberton, acquired by
the American Numismatic Society in 1997. Vol. 1. Text -- vol. 2. Plates
Along with Nuri Pere, the standard reference collection. Limited printing of 200 copies.