|
|
| Isthmian Gate, towers I, II and III ... N/A ... Depicts the following; Plan; State NB 239, pp. 103-106 ... N/A |
| Trench(es) I ... Shelly, J. W. and Pensche ... Depicts the following; Elevation; State ... N/A |
| Trench(es) I and II ... Shelly, J. W. and Pensche ... Depicts the following; Plan; State ... N/A |
| Trench(es) IV, V, VI ... Shelly, J. W. and Pensche ... Depicts the following; Plan; State ... N/A |
| Trench(es) IX ... Shelly, J. W. and Pensche ... Depicts the following; Plan; State ... N/A |
| Trench(es) key plan ... Shelly, J. W. and Pensche ... Depicts the following; Plan; State ... N/A |
| Trench(es) VII ... Shelly, J. W. and Pensche ... Depicts the following; Plan; State ... N/A |
| Trench(es) XII and XV ... Shelly, J. W. and Pensche ... Depicts the following; Plan; State ... N/A |
|
|
