Archives of the Architects' Council of the BNA for the period 1946-1988 and also some documents of the Stichting Bureau Architectenregister, established after the creation of the Architect's Title Act, for the period 1987-1994. The archive of the Board of Architects also includes the complete Register of Architects. The first part of the BNA archives also contains some documents concerning the Architects' Council. In 1988 the Architectenregister became independent within the Stichting Bureau Architectenregister. Supervision and enforcement of the rules of conduct then passed from the Architectenraad to the BNA.