Under Dargle Bridge by John Payne Jennings.

London Photograph Diary

Victoria and Albert Museum's photography collection

National Science and Media Museum

RPS Journal 1853-2012 online and searchable

Photographic History Research Centre, Leicester

Birkbeck History and Theory of Photography Research Centre

William Henry Fox Talbot Catalogue Raisonné

British Photography. The Hyman Collection

The Press Photo History Project Mapping the photo agencies and photographers of Fleet Street and the UK

The correspondence of William Henry Fox Talbot

Historic England Archive

Martin Parr Foundation

UAL Photography and Photography and the Archive Research Centre

Royal Photographic Society's Historical Group

www.londonstereo.com London Stereoscopic Company / T. R. Williams

www.earlyphotography.co.uk British camera makers and companies

Fox Talbot Museum, Lacock.

National Portrait Gallery, London

http://www.freewebs.com/jb3d/
Alfred Seaman and the Photographic Convention

Frederick Scott Archer