He wrote the section Familie Danaidae in Die Gross-Schmetterlinge der Erde 1909–1910, 5: 113–171, pls 31–41 edited by Adalbert Seitz and published by Alfred Kernen. Stuttgart, Germany. His revision of the subfamily Ithomiinae is still the standard work. The types of the new taxa he described are in Museum für Naturkunde Berlin. Coleoptera and Arachnida supplied by his dealership are in the same museum. Hemiptera(rarely available from dealerships) are in Staatliches Museum für Tierkunde Dresden and Institute of Zoology, Polish Academy of Sciences, Warsaw (originally supplied to Natural History Museum, Stettin) and in the German Entomological Institute collection.
- Gaedecke, R. and Groll, E. K. (Hrsg.): Biografien der Entomologen der Welt : Datenbank. Version 4.15 : Senckenberg Deutsches Entomologisches Institut, 2010