| RGO Archives/RGO 5 contains: |
|---|
| <-- See earlier |
|---|
| 65 |
Observations of north polar distances |
| 66 |
Observations with Troughton's circle |
| 67 |
Original mural circle observations |
| 68 |
Mural circle observations |
| 69 |
Observations of north polar distances |
| 70 |
Original observations with Troughton's mural circle |
| 71 |
Observations with Troughton's mural circle |
| 72 |
Observations with Troughton's mural circle |
| 73 |
Observations with Troughton's mural circle |
| 74 |
Observations with Troughton's mural circle |
| 75 |
Observations with Troughton's mural circle |
| See later --> |
|---|
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