established two new quarries for Breen in eastern Stearns County. In 1907 Clark formed his own partnership with fellow Saint Paul resident John McCormick. McCormick had connections with Archbishop John Ireland and secured a major contract to provide of granite for the Cathedral of Saint Paul then under construction in the capital. By 1912 their Rockville quarry employed an average of 85 men and was producing of finished stone daily. McCormick, who only planned to be involved for the duration of the cathedral contract, left the partnership in 1916, after which the business became the John Clark Company. Two years later the quarry ranked as Minnesota's largest producer of structural granite. Stone from the quarry was used in the Foley Square Courthouse in New York City, a hospital in St. Cloud, Minnesota, and dozens of other buildings around the country. The quarry was also the instrumental force behind Rockville's growth as a community. Stonecutters brought in from Scotland and Scandinavia were so numerous that they regularly co-opted Rockville's Main Street for soccer games after work. John Clark continued to reside in Saint Paul until 1924, when his Rockville house was completed across the road from the quarry. Clark's son John Gordon Clark designed the house and company stonemasons handled the construction. It is one of the few residences in Stearns County actually built from local granite; the material was usually too valuable to use in anything but major civic and corporate buildings. In 1942 the John Clark Company was purchased by Cold Spring Granite, now Coldspring. See also List of quarries in the United States National Register of Historic Places listings in Stearns County, Minnesota References External links Historic American Engineering Record (HAER) documentation, filed under Minnesota Highway 23 at Pine Street, Rockville, Stearns County, MN: Buildings and structures in Stearns County, Minnesota Colonial Revival architecture in Minnesota Historic American Engineering Record in Minnesota Houses on the National Register of Historic Places in Minnesota Industrial buildings and structures on the National Register of Historic Places in Minnesota National Register of Historic Places in Stearns County, Minnesota Quarries in the United States