The corner stone of the Keyport Free Public Library building was laid “with impressive Masonic ceremonies” on June 17, 1913. Nine months later, the new Library building was opened and formally dedicated on March 31, 1914. Yet the story behind the building’s construction is an unusual one and involves a case where a new tax exemption, some creative accounting, and a legal loophole led to the eventual establishment of an arsenal of books where there once was an arsenal of weapons. The building’s facade remains unchanged today and on the exterior it reads “Raritan Guard Public Library.”