Drains along west side of the North-South Street ... south 618 Horizontal (normal) ... July 1972
Drains along west side of the North-South Street ... AMS south 618 ... July 1972
Drains along west side of the North-South Street with cover slabs removed ... south 630 Horizontal (normal) ... August 1972
Drains along west side of the North-South Street with cover slabs removed ... AMS south 630 ... August 1972
