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English: Sikorsky R-4
This category has only the following subcategory.
- ► Sikorsky R-4 museum aircraft (2 C, 7 F)
Pages in category "Sikorsky R-4"
This category contains only the following page.
Media in category "Sikorsky R-4"
The following 33 files are in this category, out of 33 total.