The papers contain correspondence, notes, commissions, invitations, photograph albums, and scrap books covering the years of Lyon's prime-ministership. The Depression, the formation of the United Australia Party, the choosing of the first U.A.P. Ministry, trade and customs in the 1930s, the appointment of Lord Gowrie as Governor-General, financial relations with Great Britain, the abdication of Edward VIII and the economy during the 1930s are all referred to in the papers. The main correspondents are C.L.A. Abbott, Lord Bruce, Eric Campbell, Sir Douglas Copland, Dr J. H.L. Cumpston, A.C. Davidson, Percy Deane, E.C. Dyason, F.M. Forde, Prof. L.F. Giblin, Sir Robert Gibson, Lord Gowrie, Sir Henry Gullett, Sir Laurence Hartnett, E.J. Hogan, W.M. Hughes, Colonel H.E. Jones, Sir John Latham, Sir Henry Lawson, Sir Essington Lewis, J. Ramsay MacDonald, Sir Walter Massy-Greene, G.A. Maxwell, Sir Robert Menzies, Prof. E. Morris Miller, Sir Keith Murdoch, Sir Earle Page, T. Paterson, Sir George Pearce, J.A. Perkins, Staniforth Ricketson, Sir Charles Rosenthal, J.H. Scullin, Sir Sydney Snow, Sir Bertram Stevens, Sir Frederick Stewart, M.M. Threlfall, J.B. Were, and Sir Thomas White.