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  1. Bees of the genus Colletes chiefly from Colorado. Bulletin of the AMNH ; v. 81, article 5.
    By: Lutz, Frank Eugene, 1879-1943. - Timberlake, P. H.
    Publication info: 1943
    Contributed by: American Museum of Natural History Library
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  2. Bees of the genus Perdita Smith in the American Museum of Natural History. American Museum novitates ; no. 321
    By: Timberlake, P. H.
    Publication info: New York City : American Museum of Natural History 1928
    Contributed by: American Museum of Natural History Library
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  3. New anthophorid bees from California. American Museum novitates ; no. 958
    By: Timberlake, P. H.
    Publication info: New York City : The American Museum of Natural History 1937
    Contributed by: American Museum of Natural History Library
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  4. New species of Pseudopanurgus from Arizona (Hymenoptera, Apoidea). American Museum novitates ; no. 2298
    By: Timberlake, P. H.
    Publication info: New York, N.Y. : American Museum of Natural History 1967
    Contributed by: American Museum of Natural History Library
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  5. Notes on some anthidiine bees of Montana and California. American Museum novitates ; no. 277
    By: Cooley, R. A. - Schwarz, Herbert Ferlando, 1883-1960. - Timberlake, P. H.
    Publication info: New York City : American Museum of Natural History 1927
    Contributed by: American Museum of Natural History Library
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  6. Revision of the parasitic hymenopterous insects of the genus Aphycus Mayr, with some notice of related genera. By P. H. Timberlake.
    By: Timberlake, P. H.
    Publication info: Washington,Govt. Print. Off.,1916.
    Contributed by: University of California Libraries (archive.org)
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  7. Some new species of Pseudopanurgus of the subgenus Heterosarus Robertson (Hymenoptera, Apoidea). American Museum novitates ; no. 2185
    By: Timberlake, P. H.
    Publication info: New York, N.Y. : American Museum of Natural History 1964
    Contributed by: American Museum of Natural History Library
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  1. Descriptions of new species of Perdita (Hymenoptera, Apoidea) in the collection of the California Academy of Sciences
    By: Timberlake, P. H. (Philip Hunter), 1883-1981
    Type: Article
    In: Proceedings of the California Academy of Sciences
    Volume: 41
    Date: 1977
    Page Range: 281--295
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  2. New genera and species of Encyrtinae from California parasitic in mealybugs (Hymenoptera)
    By: Timberlake, P. H. (Philip Hunter), 1883-1981
    Type: Article
    In: University of California Publications in Entomology
    Volume: 1
    Date: 1918
    Page Range: 347--367
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  3. Revision of the parasitic chalcidoid flies of the genera Homalotylus Mayr and Isodromus Howard, with descriptions of two closely related genera.
    By: Timberlake, P. H. (Philip Hunter), 1883-1981
    Type: Article
    In: Proceedings of the United States National Museum
    Volume: 56
    Date: 1919
    Page Range: 133--194
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  4. Some new species of Pseudopanurgus of the subgenus Heterosarus Robertson Hymenoptera, Apoidea
    By: Timberlake, P. H. (Philip Hunter), 1883-1981
    Type: Article
    In: American Museum Novitates
    Volume: no. 2185, p. 1-26
    Date: 1964
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