The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1941)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1942)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1943)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1946)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1947)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1951)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1953)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1955)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1957)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1961)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1964)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1967)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1968)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1972)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1975)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1980)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1982)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1984)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1985)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1986)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1989)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1991)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1993)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1994)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1995)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1997)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1998)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1999)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 2001)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 2003)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 2005)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 2007)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 2009)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 2010)