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(1957). p. 203. https://archive.org/details/bub_gb_M1ArAAAAYAAJ
↑ Editor's Desk (1889年9月22日). “A Barnard Medal”. New York Times. New York Times. https://www.nytimes.com/1889/09/22/archives/a-barnard-medal-one-of-the-provisions-of-the-will-of-columbias-late.html 2014年5月22日閲覧。
↑ Wilk, Jocelyn K. (Associate University Archivist) (11 June 2014). Barnard Medal for Meritorious Service to Science (2014 ed.). New York, New York: Columbia University Rare Book & Manuscript Library
↑ “Commencement - 1910”. Columbia University Quarterly 12 (4): 382. (September 1910). https://archive.org/details/columbiauniversi12newyuoft.