David Cohen Fine Art - Art of the First World War 1914-1918.
http://www.dcfa.com/
Tom Donovan Editions - Tom Donovan Editions is a publishing house that specialises in books relating to British military history, particularly the two world wars.
http://www.tomdonovaneditions.com
Turner Donovan Military Books - offer the world’s finest selection of rare and out-of-print books on British military history from 1800 to 1945.
http://www.turnerdonovan.com
The Western Front Association (WFA) - was formed with the aim of furthering interest in The Great War of 1914-1918. http://www.westernfrontassociation.com
Battle Honours - Specialist Battlefield Tours - Battle Honours are committed to delivering high quality walking tours of the battlefields around the globe - http://www.battle-honours.co.uk/index.htm