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Jahns, Richard Henry (1943) Tactite Rocks of the Iron Mountain District, Sierra and Socorro Counties, New Mexico. Stratigraphy of the Easternmost Ventura Basin, California, with a Description of a New Lower Miocene Mammalian Fauna from the Tick Canyon Formation. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/VGB7-WJ85. https://resolver.caltech.edu/CaltechETD:etd-12162003-163611

Jahns, Richard Henry (1935) Geology of the Ravenna Quadrangle. Bachelor's thesis, California Institute of Technology. doi:10.7907/K1PV-N521. https://resolver.caltech.edu/CaltechTHESIS:03172010-101510816