In 1867, they purchased land on Livermore Street, and with it, an old yellow house. With 12 very sick patients, they started a small hospital, known as St. John's Hospital. Over the years, St. Joseph's and St. John's Hospitals grew to serve more than 100,000 people each year. When the two hospitals merged in 1992 to form Saints Memorial Medical Center, the organization became the Merrimack Valley's largest health care provider.