MolluscaBase name details
original description
Say, T. (1817). Conchology. - In: Nicholson, W.: American edition of the British Encyclopedia, or, dictionary of arts and sciences comprising an accurate and popular view of the present improved state of human knowledge. First Edition, A-3 - C-6 [= 1-20], pl. [1-4].
page(s): [unpaginated], pl. 4, fig. 4 [details]
original description
(of Helix arboreus Say, 1817) Say, T. (1817). Conchology. - In: Nicholson, W.: American edition of the British Encyclopedia, or, dictionary of arts and sciences comprising an accurate and popular view of the present improved state of human knowledge. First Edition, A-3 - C-6 [= 1-20], pl. [1-4].
page(s): [unpaginated], pl. 1, fig.1 [details]
additional source
Bland, T. & Cooper, J. G. (1861). Notice of land and freshwater shells collected by Dr. J. G. Cooper in the Rocky Mountains, etc., in 1860. <em>Annals of the Lyceum of Natural History of New York.</em> 7: 362-370., available online at https://www.biodiversitylibrary.org/page/16227827
page(s): 369 [details]