Dry Dock 4 Monthly Progress Photo – Caisson
- Object Type
- Photograph
- Object ID
- 9824
- Date
- April 1 1912
- Description
- Penn Bridge Company contractor.
- Related Collection
- Records of Naval Districts and Shore Establishments
- Naval ID
- F544N691
- Subjects
- Construction, Dry Dock 4, Labor and Yard Workers
- Building
- Dry Docks → Dry Dock 4
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