Wilson made many field trips in the US to collect birds, reptiles, fish and insects, minerals, fossils and shells . He also purchased entire collections of specimens and libraries by mail and during his five trips to Europe. One such collection was that of François Victor Masséna (12,500 bird specimens).
Anonymous (1882). "Thomas Bellerby Wilson, M.D.". Historical and Biographical Encyclopedia of Delaware. Wilmington: Aldine Publishing and Engraving Co.
W. H. Day (1984). "T. B. Wilson, M.D., a founder and benefactor of the American Entomological Society, and his family: our first Newark, Delaware-Philadelphia connection". Entomological News. 95 (4): 137–147.
Stone, Witmer (1899). "A Study of the Type Specimens of Birds in the Collection of the Academy of Natural Sciences of Philadelphia, with a Brief History of the Collection". Proceedings of the Academy of Natural Sciences of Philadelphia. 51 (1): 5–62. JSTOR4062478.
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