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Graig Merthyr Colliery, film negative

Bargoed Colliery, negative

Big Pit Colliery, film negative

Nixon's Navigation Colliery, photograph

Coegnant Colliery, film negative

Betws Mine, film negative

Front cover of a book of 172 cyanotypes of ferns

Cyanotype of the fern Gleichenia circinata

Cyanotype of the fern Gleichenia cunninghamii

Cyanotype of the fern Gleichenia flabellata

Cyanotype of the fern Gleichenia dichotoma

Cyanotype of the fern Cyathea dealbata

Cyanotypes of two ferns

Cyanotypes of a different ferns from New Zealand

Cyanotypes of a different ferns from New Zealand

Cyanotype of the fern Davallia pyxidata

Cyanotypes of a different ferns from New Zealand

Cyanotypes of a different ferns from New Zealand

Cyanotype of the fern Adiantum affine

Cyanotype of the fern Adiantum formosum