Beth yw Cadw? - What is Cadw?: cyflwyniad i waith Cadw: Welsh Historic monuments - an introduction to the work of Cadw: Welsh Historic Monuments (1995)
Guide to the collection illustrating the prehistory of Wales (1939)
Catalogue of seals in the National Museum of Wales / Amgueddfeydd ac orielau Cenedlaethol Cymru (1998) [2, Ecclesiastical, monastic and collegiate seals with a supplement concerning Wales]
Inventory of the ancient monuments in Glamorgan (1981) [Volume IV, Domestic architecture from the reformation to the industrial revolution, part I: the greater houses]
Glamorgan county history (1980) [v.5., Industrial Glamorgan from 1700 to 1970]
Glamorgan county history: from the Act of Union to the Industrial Revolution (1974)
Glamorgan county history (1971) [Vol.3, The Middle Ages, the Marcher Lordships of Glamorgan and Morgannwg and Gower and Kilvey from the Norman Conquest to the Act of Union of England and Wales]
Glamorgan County history (, 1984) [Vol.2, Early Glamorgan]
Glamorgan county history (1936) [Vol.1, Natural history]
Pattern and purpose: a survey of early Celtic art in Britain (1958)