From 1941, National Geographic magazine. Under the photo it says: "A Little Dog with a Huge Fur Coat Is the Hungarian Puli. Shaggy Zsoka (left) & pups ... are pictured with the daughter of Zsoka’s owner, Mr. Louis Kiss of New York City. In its native Hungary the Puli herds sheep, sometimes actually leaping upon their backs. Recently the United States Department of Agriculture has experimented with Pulis at Beltsville, Maryland, in tests of inheritance of intelligence and temperament."