Short answers, pulled from the story.
The distinctive white face became a fixed characteristic of the Hereford cattle breed by the end of the 18th century. This visual identity was established after decades of selective breeding by local families in Herefordshire, England, who combined hardiness with meat-producing qualities.
The true foundation of the American Hereford breed was established in 1840 in Albany, New York. A large herd was formed there to kickstart the breed's dominance in North America, following earlier imports to Kentucky in 1817 and Ireland in 1775.
The American Polled Hereford Association formed in 1910 to manage a lineage of cattle born without horns due to a natural genetic mutation. In 1995, the American Polled Hereford and American Hereford breeds merged under the American Hereford Association name to unify the horned and hornless lines.
The Hereford cattle breed faces specific genetic vulnerabilities including ocular squamous cell carcinoma, vaginal prolapse, and dwarfism. Research in the United States and Canada shows that lid and corneoscleral pigment are heritable traits that can decrease the risk of eye cancer.
The Traditional Hereford is a minority strain that retains the original hardiness and thriftiness of the early breed before the 19th and 20th centuries. These cattle are preserved for genetic conservation and are still seen in the Herefordshire countryside to ensure genetic diversity is not lost.