The papers are arranged under four broad subject headings: Design; Journalism, Books and Illustration; Other Professional Activities; and Personal and Biographical Material.
The papers are arranged in the following sub-groups:
Architecture, interior design and refurbishments (ca. 1933 - 1992); camouflage work (1940 - 1944); Festival of Britain (1948 - 2007); Time and Life Building, Bond Street, London (1951 - 1993); Coronation decorations (1952 - 2003); New College Building, Royal College of Art, Kensington Gore (with H.T. Cadbury-Brown) (1955 - 1972); Zoological Society of London (1960 - 2000); H. M. Yacht Britannia (1970 - 2000); Royal Train (1974 - 1990); consultancies and public enquiries (1957 - 1996); objects: Midwinter pottery (ca. 1954 - 1997); theatre and opera design (1952 - 2002); magazines and journalism (1934-1996); books (1938 - 2003); illustration (ca. 1926 - 1999); institutions and societies (1949 - 1997); exhibitions (1984 - 1996); lectures, talks, funeral addresses and obituaries (1945 - 1992); broadcasting: television and radio (1950 - 2006); miscellaneous correspondence, and letters of support and recommendation (1954 - 2003); Royal Mint Advisory Committee (1975 - 1995); trusts and charities (1970 - 2001); early life: family, school and Cambridge University (1867 - ca.1998); diaries, passports and National Life Collection Interviews (ca. 1928 - 1996); portraits of Sir Hugh Casson (ca. 1930 - 1990); reviews and articles about Sir Hugh Casson and his work (1938 - 2007); personal belongings of Sir Hugh Casson (1996).