Division sign of the 34th Division in the First World War
Mike Chappell
British Battle Insignia (1) 1914-18, Osprey Publishing <a href="//commons.wikimedia.org/wiki/Special:BookSources/978-0-85045-727-8" title="Special:BookSources/978-0-85045-727-8">ISBN 978-0-85045-727-8</a>