In 1895 Acton was appointed professor of modern history at Cambridge and in the following years planned the Cambridge Modern History, of which only the first volume appeared before his death. Acton never completed a book. Rather, his influence was felt through his lectures, his writings for periodicals, and his personal contacts with the leading historians of his time. Many articles, essays, and lectures were brought together after his death in Lectures on Modern History (1906), History of Freedom (1907), and Historical Essays and Studies (1907). Some of these were reprinted in Essays on Freedom and Power (1948) and Essays on Church and State (1952). His impressive personal library, consisting of more than 59,000 volumes, was bought by Andrew Carnegie after his death and donated to Cambridge.
See his correspondence with Richard Simpson, ed. by J. L. Altholz (2 vol., 1970-73); biographies by H. Tulloch (1989) and R. Hill (2000).
The people of this name include: