Labelled sheet of photogrammetric survey elevations of Launceston Castle's barbican, showing the west face of the west wall and the east face of the east wall, with keep and location plans and a key to polyphant stone
- Date:
- 1988
- Location:
- Launceston Castle, Western Road, Launceston, Cornwall
- Reference:
- MP/LAU0068
- Type:
- Photogrammetric Survey