Lewis, James. Descriptions of New Species of American Land and Freshwater Shells (англ.) // Proceedings of the Academy of Natural Sciences of Philadelphia : journal. — 1875. — 1 May (vol. 27, no. 2). — P. 334—337. — ISSN0097-3157. — JSTOR4624495.
Lewis, James. Description of a New Species of Helix (неопр.) // Proceedings of the Academy of Natural Sciences of Philadelphia. — 1874. — 1 April (т. 26, № 2). — С. 118—119. — ISSN0097-3157. — JSTOR4624414.
Lea, Isaac[англ.]. Descriptions of Twenty New Species of Uniones of the United States (англ.) // Proceedings of the Academy of Natural Sciences of Philadelphia : journal. — 1871. — 1 April (vol. 23, no. 2). — P. 189—193. — ISSN0097-3157. — JSTOR4624172.
Lewis, James. Descriptions of New Species of American Land and Freshwater Shells (англ.) // Proceedings of the Academy of Natural Sciences of Philadelphia : journal. — 1875. — Vol. 27, no. 2. — P. 334—337. — ISSN0097-3157. — JSTOR4624495.
Lea, Isaac[англ.]. Descriptions of Twenty New Species of Uniones of the United States (англ.) // Proceedings of the Academy of Natural Sciences of Philadelphia : journal. — 1871. — 1 April (vol. 23, no. 2). — P. 189—193. — ISSN0097-3157. — JSTOR4624172.
worldcat.org
Lewis, James. Descriptions of New Species of American Land and Freshwater Shells (англ.) // Proceedings of the Academy of Natural Sciences of Philadelphia : journal. — 1875. — 1 May (vol. 27, no. 2). — P. 334—337. — ISSN0097-3157. — JSTOR4624495.
Lewis, James. Description of a New Species of Helix (неопр.) // Proceedings of the Academy of Natural Sciences of Philadelphia. — 1874. — 1 April (т. 26, № 2). — С. 118—119. — ISSN0097-3157. — JSTOR4624414.
Lea, Isaac[англ.]. Descriptions of Twenty New Species of Uniones of the United States (англ.) // Proceedings of the Academy of Natural Sciences of Philadelphia : journal. — 1871. — 1 April (vol. 23, no. 2). — P. 189—193. — ISSN0097-3157. — JSTOR4624172.
Lewis, James. Descriptions of New Species of American Land and Freshwater Shells (англ.) // Proceedings of the Academy of Natural Sciences of Philadelphia : journal. — 1875. — Vol. 27, no. 2. — P. 334—337. — ISSN0097-3157. — JSTOR4624495.