1. HSA 1882a: Letter 015-03222; Henri Gaidoz to Hugo Schuchardt
2. HSA 1882b: Letter 6-7473; Alfred Morel-Fatio to Hugo Schuchardt
3. HSA 1882c: Letter 1-8742; Emil Jellinek to Hugo Schuchardt
4. HSA 1882d: Letter 4-8745; Emil Jellinek to Hugo Schuchardt
5. HSA 1883: Letter 026-03232; Henri Gaidoz to Hugo Schuchardt