Organization Newcomen Society

Kibworth History Society (founder)

American Society of Mechanical Engineers

History of Science Society

National Association of Science Writers

Great Western Railway (Paddington engineering staff)

Institution of Civil Engineers (member)

Mineralogical Society (member)

Geological Society of London (fellow)

Marine Biological Association (founding member | 1884)

Plymouth Institution (member | 1888 | president | 1904 | honorary member | 1937)

Devonshire Association (member | 1891 | president | 1930 | contributor)

Trevithick Society

National Museum of Wales (keeper of the Department of Industry)

HM Factory Inspectorate

Royal Army Ordnance Corps

British lron and Steel Federation (education and training officer)

Ancient Monuments Board for Wales

Royal Commission on Ancient and Historical Monuments in Wales (commissioner)

Society of Antiquaries (fellow)