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.

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.