The records, transferred from the Federal Government in Ottawa to Yellowknife in 1967 include administrative and operational files. These files incorporate: correspondence, reports, vital statistic information, financial data, minutes, and a wide variety of reference material kept by the department. The files were classified via a numerical block system. The block system consisted of primary, secondary and tertiary levels such that a composite file number (for example 311-105-93) would represent a progression from general subject matter to a specific subject and/or location. The primary number block consisted of: 100 - Administration; 200 - Economic and Industrial Development; 300 - Engineering Projects; 400 - Forests and Game; 500 - Public Service; 600 - Education; 700 - Lands Division: Public Lands; 800 - Lands Division: Territorial Lands and Timber; 900 - Resources; 1000 - General files on settlements, associations, companies, provinces, foreign countries, Inuit affairs, and resources; 20 - Individual case files; 3 - Personnel and organizational files. These broad blocks were subsequently divided in smaller units and secondary and tertiary blocks. For example Forests and Games (400) subdivides into Warden Service (420), or Fisheries (430). None of the 700, 800 or 900 block files were forwarded to the NWT Archives. Moreover, at the time of transfer from Ottawa, it appears that other records from the file blocks brought to Yellowknife in 1967 were culled in Ottawa.