by American Society of Animal Production

1909

by American Duroc-Jersey Association

1917

by American Duroc-Jersey Swine Breeders' Association

1922

by American Breeders' Association

1911

by American Breeders Association

1911

by American Genetic Association

1911

by American Breeders Association. Meeting

1911

by American Genetic Association

1911

by American Society of Animal Science

1909

by American Breeders Association. Meeting

1911

by American Society of Animal Science

1909

by Pan American Union

1921