| Series | Control Symbol | Title | Contents dates |
|---|---|---|---|
| SP1288/1 | N330/3/22 | Extension of rail siding at Sandown - information sought re depth of cables [General Post Office, Sydney correspondence files] [.05cm; box 20] | 1967 - 1967 |
| SP1288/1 | N330/3/24 | Submarine calbe sunny Corner Hawkesbury River - repainting of warning sign [General Post Office, Sydney correspondence files] [.05cm; box 20] | 1969 - 1969 |