This series consists of the main administrative files concerning the running of the National Advisory Committee (NAC).  The majority of the files record the meetings, the administration of the meetings and the subsequent action in respect to submissions. A number of the files serve as personnel files for members of the NAC and are given the members' names as file titles. These files include records of appointments, correspondence on release from employers for meetings and notifications of meetings, and letters forwarding material.

The consignment list for these records shows only the 'NAC' (National Advisory Committee) prefix but some files have 'W/NAC' prefix instead.  This did not affect the run of numbers.