The railroad entered the community in 1850, carrying freight but also tourists, helping Plum Island develop into a Victorian seaside resort. Back on the mainland, silver was discovered in a large field in 1878, and the Chipman Silver Mine would begin operations until it finally closed in 1925. By 1905, however, the economy had shifted back to agriculture, and Newbury became a supplier of eggs, milk and poultry. Some would dig for clams or hay the salt marshes. The town is today primarily residential, with many examples of fine antique architecture.