Bernard Quaritch, ed., Contributions Towards a Dictionary of English Book-Collectors (issued in 14 parts, London, 1892-1899, 1921; reprinted New York, 1968)
William Younger Fletcher, English Book Collectors, The English Bookman's Library, edited by Alfred Pollard (London, 1902)
Seymour de Ricci, English Collectors of Books & Manuscripts (1530-1930) and Their Marks of Ownership, the Sandars Lectures 1929-1930 (Cambridge, 1930; reprinted New York, 1969)
A. N. L. Munby, Phillipps studies, 5 vols (Cambridge, 1951-1960)