Two pages from the book Hounds by Frank Townend Barton, 1913An Irish-American setter from the book Breeding, training, management, diseases & c. of dogs by Francis Butler, 1877An entry in the retriever section from The New Book of the Dog, Vol. I by Robert Leighton, 1907From The Illustrated Book of the Dog by Vero Kemball Shaw, 1881Pekingese mixed with pugs (first three images) and with Japanese spaniels (fourth image) from The Dog Book, Volume II by James Watson, 1906
Tsk! Not mixed breeds or mongrels – they are all “Designer Dogs”.