Natalicia augustissimi regis Friderici Guilelmi IIII Universitatis Fridericianae Guilelmiae Rhenanae ... die mensis octobris anni MDCCCLV ... ex officio indicit Fridericus Ritschl - Schmidt, Leopold, 1824-1892; Ritschl, Friedrich Wilhelm, 1806-1876 (Litterae Caroli Georgii, 1855)