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1863
Plate II: Observatory signals : used at …
Survey Book
Plate II: Observatory signals : used at …
1863
Plate III: Elevation of the Scaffold use …
Survey Book
Plate III: Elevation of the Scaffold use …
1863
Plate IV: Plan and elevation of the plat …
Survey Book
Plate IV: Plan and elevation of the plat …
1863
Plate V: Elevation of the scaffold used …
Survey Book
Plate V: Elevation of the scaffold used …
1863
Plate VI: Elevation of the French scaffo …
Survey Book
Plate VI: Elevation of the French scaffo …
1863
Plate VII: Elevation of the French scaff …
Survey Book
Plate VII: Elevation of the French scaff …