Museum für Naturkunde der Humboldt-Universität, Berlin.It holds part of the Philippi collection.
Naturkundemusuem im Ottoneum, Kassel.It hosts the Philippi Society and publishes Philippia.
Museo Nacional de Historia Natural, Santiago.It holds the richest documentation of Philippi's work.
Società Italiana di Malacologia
Taxonomic Database on European Marine Molluscs
International Commission on Zoological Nomenclature
AnimalBase - Early Zoological Literature Online
Index Animalium / Charles Davies Sherbon