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These papers were brought together posthumously by Lewis H. Larson and Stephen Williams and were published in 1968 through the Peabody Museum of Harvard University.
He had a museum of the material which he had gathered, and exchanged specimens with museums in Berlin and Vienna, and with the Peabody Museum of Archaeology and Ethnology, the American Museum of Natural History, and the Smithsonian.
It was displayed in the Peabody Museum, the Smithsonian Institution and the International Expositions of Madrid and Chicago before fading from the public eye, only to be resurrected in the 1970s when its authenticity was once again subject to debate.
He has spoken at Google, Department of Agriculture, Monterey Bay Aquarium, Rensselaer Polytechnic Institute, Yale University, Wesleyan University, New York University, Peabody Museum and The Museum of the City of New York.
29 He was a keynote speaker at the 2004 meeting of the International Council of Museums in Seoul, Korea and in 2007 gave the Founder’s Lecture at Harvard University's Peabody Museum.