Plymouth has been the hub of Wisconsin's dairy and cheese industry since the city was founded. The Holstein, the premier dairy cow, was imported from Holland in 1870. In 1882, the National Cheese Exchange was established at Plymouth, and the city soon became known as the Cheese Capital of the World. Dr. Elmer Eldridge and Harmon Wheeler, both residents of Plymouth, perfected methods of processing cheese. Today, several cheese and dairy companies are flourishing in Plymouth, including Borden Cheese Division, Sargento Cheese Company, Farm Bureau, Sheboygan County Holstein Breeders Association, Plymouth Creameries, and S and R Cheese Corporation.