The series comprises letters, 1948-1995, from publishers, organisations, breeders and private individuals, mainly on the subjects of dog breeds; canine behaviour; health and welfare; anecdotes; the content, illustration and publication of canine literature; Hubbard's private book collection; orders for books; radio broadcasts; dog shows; breed club business; and personalities of the dog world.

The series comprises research notes, pedigrees, press cuttings, manuscript and printed sources, copies and extracts from literature, private letters, printed leaflets and circulars, on the subjects of canine bibliographies, 1958, 1972, literature, [post-1786], 1896, [1925], 1944-1945, history, c. 1800, 1862-1875, 1908-1951, British and foreign dog breeds, classification of types, breed conformation standards, 1883-1995, physiology and health, 1924-1970, care, breeding and training, [post-1924]-1971, hunting, 1888-1954, dogs in art, war, work and leisure, 1937-1951, and the pug, 1950-1966; and an album of show certificates, [1889]-1895. Since the format of the majority of files is similar, only items of particular interest are noted at file level.

The series comprises whole issues, individual pages, scrap books and loose cuttings of newspapers and magazines, 1816-1993, covering the biology of breeding, breed types, care, welfare, training, dog-loving celebrities, showing, clubs, animal photography, dogs and the law, working dogs, terriers, spaniels, anecdotes and a few, non-canine topics.

An archive of papers relating to Ann Clwyd's political and campaigning activities in Wales, the UK and internationally. The papers include correspondence, reports, parliamentary and Labour party papers and cover matters such as international development, human rights, healthcare standards and animal rights.