Letters from statesmen and others congratulating Birdwood on his actions, including letters from Austen and Neville Chamberlain, Winston Churchill, Lord Curzon, the Viceroy of India (1931), Maurice A Hankey, Lord Hardinge of Penhurst, David Lloyd George, the Portuguese Government, Lancelot Stoer,...
Miscellaneous correspondence with friends and well wishers including letters written, on Birdwood's appointment as Master of Peterhouse, Cambridge (1931).
Letters from various people including Lord Jellicoe, the Australian High Commissioner to Britain (1936), the New Zealand High Commissioner to Britain (1939), the Australian Prime Minister (1936) and others remembering the Gallipoli Campaign, and discussing Australian/New Zealand matters.
Correspondence between Kitchener and Colonel Wilfred Malleson, Head of Intelligence, Indian General Staff, enclosing copies of memoranda by Sir Habibullah Khan, Amir of Afghanistan, on Sir Lewis Dane's mission to Kabul.
Correspondence and papers relating to Birdwood's career during World War One; including printed letters from Birdwood to his troops in the Australian Imperial Force; from Churchill congratulating him on his work; Army Orders of Battle, presscuttings etc.