BioStor
 | Invertebrate megafossils of the Belvedere expedition to the Gulf of California (1964) Transactions of The San Diego Society For Natural History 13: 333-368 |
 | A quantitative analysis of molluscan collections from Isla Espíritu Santo, Baja California, Mexico A Myra Keen (1964) Proceedings of the California Academy of Sciences 30: 175-206 |