L. Cleaver, ‘The Western Manuscript Collection of Alfred Chester Beatty (ca. 1915-1930)’, Manuscript Studies, Vol. 2 (2017), pp. 445-82.
L. Cleaver and D. Magnusson, ‘American Collectors and the Trade in Medieval Illuminated Manuscripts in London, 1919-1939: J. P. Morgan Junior, Alfred Chester Beatty and Bernard Quaritch Ltd.’ in T. Burrows and C. Johnston ed. Collecting the Past: British Collectors and their Collections from the 18th to the 20th Centuries (London and New York, 2019), pp. 63-78.
L. Cleaver, 'Charles William Dyson Perrins as a Collector of Medieval and Renaissance Manuscripts c. 1900-1920', Perspectives Médiévales 41 (2020).