1.
Hugo Schuchardt an Graziadio Isaia Ascoli (124-B76_8)
2.
Leo Spitzer an Hugo Schuchardt (10-10772)
Dirk Christiaan Hesseling an Hugo Schuchardt (05-04682)
Walter Richard Voullaire an Hugo Schuchardt (01-12552)
Leo Spitzer an Hugo Schuchardt (142-10903)
Gastan Caraigy an Hugo Schuchardt (1-1537)
Albert Arnavielle an Hugo Schuchardt (2-169)
George Karel Niemann an Hugo Schuchardt (01-07845)
Rodolfo Lenz an Hugo Schuchardt (04-06398)
Johann Georg Krönlein an Hugo Schuchardt (01-05834)