From the book Histoire Physiologique et Anecdotique des Chiens de Toutes les Races by Bénédict-Henry Révoil, 1867Brief entry in the book The Dogs of the British Islands by Stonehenge, 1872From the article “The Newfoundland Dog” appearing in the August 7, 1879 issue of Forest and StreamFrom the book British dogs their varieties, history, characteristics, breeding, management and exhibition by Hugh Dalziel, 1879From the book The Twentieth Century Dog (Sporting) by Herbert Compton, 1904An early Labrador from the book The Complete English Wing Shot by G.T. Teasdale-Buckell, 1907Labradors in 1901 pictured in the book The Complete English Wing Shot by G.T. Teasdale-Buckell, 1907From the book The History of Retrievers by Charles C. Eley, 1921From the book Sport is Where You Find It by Philip K.Crowe; illustrated by Paul Brown, 1953
