Botanical abstracts - Board of Control of Botanical Abstracts. (Williams & Wilkins Co, 1920)

The Bryologist - Grout, A. J. (Abel Joel), 1867 -1947 (American Bryological and Lichenological Society, 1920)

Bulletin de l'Herbier Boissier - Herbier Boissier. (Impr. Romet, 1893)

Cryptogamic botany - Cardot, Jules, 1860 -1934 (The Smithsonian Institution, 1910)

European and N. American Bryineae (mosses) - Kindberg, N. C. (Nils Conrad), 1832 -1910 (Linköpings Lithografiska Aktiebolag, 1897)

Harriman Alaska series. vol. I-V, VIII-XIV - Smithsonian Institution (Smithsonian Institution, 1904)

Harriman Alaska series. vol. I-V, VIII-XIV - Smithsonian Institution (Smithsonian Institution, 1904)

Harriman Alaska series. vol. I-V, VIII-XIV - Smithsonian Institution (Smithsonian Institution, 1904)

Harriman Alaska series. vol. I-V, VIII-XIV - Smithsonian Institution (Smithsonian Institution, 1904)

Harriman Alaska series. vol. I-V, VIII-XIV - Smithsonian Institution (Smithsonian Institution, 1904)

Harriman Alaska series. vol. I-V, VIII-XIV - Smithsonian Institution (Smithsonian Institution, 1904)

Harriman Alaska series. vol. I-V, VIII-XIV - Smithsonian Institution (Smithsonian Institution, 1904)

Hedwigia (Verlag und Druck von C. Heinrich, 1894)

Mosses of Alaska - Cardot, Jules, 1860 -1934 (1900)

The mosses of Alaska - Cardot, Jules, 1860 -1934 (The Academy, 1902)

The Polytrichacea of western North America - Frye, Theodore C. (Theodore Christian), 1869 -1962 (Williams & Wilkins Company, 1911)

The Polytrichacea of western North America - Frye, Theodore C. (Theodore Christian), 1869 -1962 (Williams & Wilkins company, 1911)

Proceedings of the Washington Academy of Sciences - Washington Academy of Sciences (Washington, D.C.) (Washington Academy of Sciences, 1902)

Proceedings of the Washington Academy of Sciences - Washington Academy of Sciences (Washington, D.C.) (Washington Academy of Sciences, 1902)

Proceedings of the Washington Academy of Sciences - Washington Academy of Sciences (Washington, D.C.) (Washington Academy of Sciences, 1910)

Species of European and Northamerican [sic] Bryineae (mosses) - Kindberg, N. C. (Nils Conrad), 1832 -1910 (Linköpings Lithografiska Aktiebolag, 1897)