His Holstein–Friesian May Echo Sylvia was the first of any breed to produce 1,000 pounds of milk in seven days, and his Jersey Rosebay’s Jolly Rose produced a record 1,004 pounds of butterfat over a year.
Sa vache Holstein-Friesian May Echo Sylvia a été la première vache, toutes races confondues, à produire 1 000 livres de lait en sept jours, et sa Jersey Rosebay’s Jolly Rose a produit un record de 1 004 livres de matière grasse butyrique en un an.
