Natalicia augustissimi regis Friderici Guilelmi IIII Universitatis Fridericianae Guilelmiae Rhenanae ... die mensis octobris anni MDCCCLVI ... ex officio indicit Fridericus Ritschl - Brunn, Heinrich, 1822-1894; Ritschl, Friedrich Wilhelm, 1806-1876 (Litterae Caroli Georgii, 1886)