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*«Bonesmen 1833–1899». Fleshing Out Skull and Bones. Archivado desde el original el 11 de agosto de 2011. Consultado el 26 de diciembre de 2018.
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Varios autores (1910-1911). «Evarts, William Maxwell». En Chisholm, Hugh, ed. Encyclopædia Britannica. A Dictionary of Arts, Sciences, Literature, and General information(en inglés) (11.ª edición). Encyclopædia Britannica, Inc.; actualmente en dominio público.