The main part of the collection consists of Sir Oliver Lodge's personal and family correspondence consisting of more than 2000 letters. Correspondents comprise colleagues at the Universities of Liverpool and Birmingham, including G. H. Rendall, Professor J. H. Muirhead and Bertram Windle; a number of clerical figures including Charles Gore, Bishop of Birmingham; various politicians and social reformers including Eleanor Rathbone, John Ruskin, Sidney and Beatrice Webb, Joseph Chamberlain and A. J. Balfour; members of prominent Birmingham families, including the Kenrick and Cadbury families; and scientists, literary figures, members of the nobility and numerous other individuals. Family correspondence includes more than 200 letters from his eldest son, Oliver W. F. Lodge, 1908-1940, and others from his brother, Richard, 1909-1933 and sister, Constance. The collection also includes an incomplete sequence of his pocket diaries; scripts and offprints of his published work, an unpublished typescript of 'Encyclopaedia of Physics', and various diagrams relating to his scientific research; presscuttings about Lodge and his interests; and photographs of his research apparatus at the University of Liverpool