1.
Wentworth Webster an Hugo Schuchardt (46-012686)
2.
Georg Gerland an Hugo Schuchardt (01-03652)
Johannes Theophilus Hahn an Hugo Schuchardt (02-04347)
Leo Spitzer an Hugo Schuchardt (10-10772)
Dirk Christiaan Hesseling an Hugo Schuchardt (05-04682)
Louis Couturat an Hugo Schuchardt (36-01994)
Emil Metzger an Hugo Schuchardt (03-07124)
Emil Metzger an Hugo Schuchardt (07-07128)
Emil Metzger an Hugo Schuchardt (10-07131)
Emil Metzger an Hugo Schuchardt (11-07132)