The fern allies of North America north of Mexico - Clute, Willard Nelson, 1869 -1950 (Stokes, 1905)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1897)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1899)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1902)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1903)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1905)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1906)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1907)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1908)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1909)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1911)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1912)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 1974)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 1985)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 1991)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 1996)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 2001)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 2002)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 2007)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 2012)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 2013)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 2014)