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WikiPedia: Morris K. Jessup http://www.de173.com http://www.de173.com/dr-morris-k-jessup, http://www.straightdope.com/classics/a2_293.html http://onlinelibrary.wiley.com/doi/10.1525/aa.1934... http://www.cassiopaea.org/cass/Varo-Jessup.PdF http://www.cassiopaea.org/cass/jessup.htm https://id.loc.gov/authorities/names/n90689275 https://snaccooperative.org/ark:/99166/w6fv13j8 https://viaf.org/viaf/77944199 https://www.wikidata.org/wiki/Q2326477#identifiers