1.
Louis Couturat an Hugo Schuchardt (36-01994)
2.
Emil Metzger an Hugo Schuchardt (03-07124)
Emil Metzger an Hugo Schuchardt (10-07131)
Emil Metzger an Hugo Schuchardt (11-07132)
Emil Metzger an Hugo Schuchardt (27-07148)
Johann Gottlieb Christaller an Hugo Schuchardt (01-01617)