Bob Miller's camera clicked once on Glenridge Citation Roxy—clipped, full of milk, mid-1970s. That frame made her immortal, but Roxy made the picture famous: 16 Excellent daughters, 50 maternal lines of endless Excellents, more breed queen titles than anyone. From a Saskatchewan grain farm to Illinois show barns, her story launches our look at seven "franchise cows"—biological engines whose daughters reshaped Holstein worldwide between 1968-2001. A bachelor spotting a sale bill photo, a bankrupt semen tank birthing Blackrose, breeders betting decades on dams when sires ruled. Discover why their names still fill pedigrees today. (378 chars)

Key Moments:

• The single photo that captured Roxy's perfection—and why two A.I. giants passed on her for lack of cash
• Bob Snow's 35-year alternating-sire patience, culmi ...