This series contains records of equipment installed by the Telephone Department. It contains the following files:
- File 1: Monthly equipment record (1926-1933)
- File 2: Monthly equipment record (1934-1939)
- File 3: Monthly equipment record (1940-1949)
- File 4: Monthly equipment record (1950-1956)
- File 5: Monthly equipment record (1968-1964)
- File 6: Monthly lines and stations report (1964-1968)