7,000 patients were being treated per year

By 1866, nearly 7,000 patients were being treated per year at the New York Infirmary, and Blackwell was needed back in the United States. The parallel project fell through, but in 1868, a medical college for women adjunct to the infirmary was established. It incorporated Blackwell's innovative ideas about medical education – a four-year training period with much more extensive clinical training than previously required.