Samples of Arabic and Persian Calligraphy
prepared by Near East Collection at Yale University Library
Two samples by Yaqut al-Musta'simi (d. 1298). Medieval authors consider him and two of his predecessors, Ibn al-Bawwab (d. 1022) and Ibn Muqlah (d. 939) as best in their field and credit them with calligraphic innovations.
Muhittin Serin, Hat Sanati ve Meshur Hattatlar (Istanbul: Kubbealti Akademisi , 1999)