I think I am lucky to have one of the best second hand bookshop near me. It is a massive shop and it supplies my wife and I with all our reading material.
I shop there for all my reference books. My recent purchases were these:
Battledress: The Uniforms of the World's Great Armies 1700 to the Present.
Hard Cover. 235 pages
The Big Guns Artillery 1914-1918
Purnell's History of the World Wars Special
Soft Cover. 64 pages
1914-1918 The Great War and the Shaping of the 20th Century
Jay Winter & Blaine Baggett
Hard Cover. 432 pages
John Batchelor, Ian Hogg
Hard Cover. 158 pages
Hard Cover. 192 pages