now not issued. New members have usually been recorded in the Photographic Journal. Dr Michael Pritchard undertook a project to make an online searchable database of members from 1853 to 1901, published by De Montfort University's photographic history research centre. The Society has a card index of members from the late 1920s to 1980s, which it will search on request, and may also be able to assist with membership enquiries between 1900 and the 1930s. Publications From the Society's formation it has published a journal and other publications have been issued over the years. The Photographic Journal The Society's journal was original called The Journal of the Photographic Society of London and for most of its existence has simply been called The Photographic Journal, it is now called RPS Journal. It has been published continuously since 1853 making it the UK's oldest photographic periodical. The journal, particularly in its early years was read and distributed beyond the Society's membership. Past editors have included Arthur Henfrey, Hugh Welch Diamond, William de Wiveleslie Abney, H. H. Blacklock, and more recently Jack Schofield and David Land. The current editor is Kathleen Morgan. The Imaging Science Journal The Society publishes a peer-reviewed journal devoted to imaging science and technology, The Imaging Science Journal (ISG), previously known as the Journal of Photographic Science. The ISJ is now published on behalf of The Society by Maney Publishing in print and digital versions. The Year's Photography The Year's Photography was published annually by the Society from 1922 until at least 1961. The flyleaf of the 1957 edition states: "This edition contains a selection from all the exhibitions held in 1956 under the Society's auspices which contained pictures suitable for reproduction There are also review of artistic photography and of the nature exhibition." The publication gives a broad overview of the state of British amateur and professional photography during the year. Other publications Over the years the Society has published a number of one-off publications often in partnership with commercial publishers. These include John Wall's Directory of British Photographic Collections in conjunction with Heinemann (1977), Roger Reynolds (ed.), Portfolio One (2007) and Roger Reynolds (ed.), Portfolio Two (2010). The Society publishes an annual International Print Exhibition catalogue and increasingly publishes digital catalogues of its exhibitions. Membership There are no restrictions on membership, which is international and includes amateur and professional photographers, photographic scientists and those involved in exhibiting,