Britain's imperial air routes 1918 to 1939 : the story of Britain's overseas airlines

Estimates and actuality : comparative costs of British cross-channel airlines, 1918-1924

Higham, Robin, (1961)

Government, companies, and national defense: British aeronautical experience, 1918-1945 as the basis for a broad hypothesis

Higham, Robin, (1965)

The history of the Second World War: British official series

Higham, Robin, (1964)