Paul and Clara Gebauer, McMinnville, OR, 1936–1972
Gebauer, Paul. Art of Cameroon: with a catalog of the Gebauer collection of Cameroon art at the Portland Art Museum and The Metropolitan Museum of Art. Portland, OR: Portland Art Museum, 1979.
Zeitlyn, David. "Mambila Figurines and Masquerades: Problems of Interpretation." African Arts vol. 27, no. 4 (Autumn 1994), Pgs. 38-47.