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| Container | Contents | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| O | |||||||||||||
| File: Subject/Geographical | Oak Ridge Atom Bomb Plant | ||||||||||||
| Extent: empty | |||||||||||||
| SEE: Tennessee--Oak Ridge | |||||||||||||
| File: Subject/Geographical | Oath of Allegiance | ||||||||||||
| Extent: empty | |||||||||||||
| SEE: Flags--United States--Oath of Allegiance | |||||||||||||
| SEE ALSO: Education--Schools--Public--Oath of Allegiance | |||||||||||||
| File: Subject/Geographical | Oatmeal | ||||||||||||
| File: Subject/Geographical | Oats | ||||||||||||
| File: Subject/Geographical | Observatories--General | ||||||||||||
| File: Subject/Geographical | Observatories--Arecibo Ionospheric Observatory--Puerto Rico | ||||||||||||
| File: Subject/Geographical | Observatories--Gran Sasso--Italy | ||||||||||||
| File: Subject/Geographical | Observatories--Greenwich--England | ||||||||||||
| File: Subject/Geographical | Observatories--Griffith--Los Angeles, Calif. | ||||||||||||
| File: Subject/Geographical | Observatories--Harvard--Arequipa, Peru | ||||||||||||
| File: Subject/Geographical | Observatories--Harvard Observatory | ||||||||||||
| File: Subject/Geographical | Observatories--Jodrell Bank Observatory--England | ||||||||||||
| File: Subject/Geographical | Observatories--Kitt Peak National Observatory | ||||||||||||
| File: Subject/Geographical | Observatories--Lamont Geological Observatory | ||||||||||||
| File: Subject/Geographical | Observatories--Lick--Mount Hamilton, Calif. | ||||||||||||
| Extent: 2 photos | |||||||||||||
| File: Subject/Geographical | Observatories--Lowell--Arizona | ||||||||||||
| File: Subject/Geographical | Observatories--McDonald Observatory--Texas | ||||||||||||
| File: Subject/Geographical | Observatories--Mount Palomar--Mount Palomar, Calif. | ||||||||||||
| SEE ALSO: Mountains--Mount Palomar--California | |||||||||||||
| File: Subject/Geographical | Observatories--Mount Washington--New Hampshire | ||||||||||||
| File: Subject/Geographical | Observatories--Mount Wilson--California | ||||||||||||
| SEE ALSO: Mountains--Mount Wilson | |||||||||||||
| File: Subject/Geographical | Observatories--National Observatory--Havana, Cuba | ||||||||||||
| File: Subject/Geographical | Observatories--National Radio Astronomy Observatory | ||||||||||||
| File: Subject/Geographical | Observatories--Sacramento Peak Observatory--New Mexico | ||||||||||||
| File: Subject/Geographical | Observatories--Smithsonian Astrophysical--Mass. | ||||||||||||
| File: Subject/Geographical | Observatories--Sphinx--Switzerland | ||||||||||||
| File: Subject/Geographical | Observatories--United States Navy--Washington, D.C. | ||||||||||||
| File: Subject/Geographical | Oceanariums--California--Marineland of the Pacific | ||||||||||||
| File: Subject/Geographical | Oceanography | ||||||||||||
| Extent: 36 photos | |||||||||||||
| File: Subject/Geographical | Oceanology | ||||||||||||
| Extent: 3 photos | |||||||||||||
| File: Subject/Geographical | Oceans--General | ||||||||||||
| SEE: For specific oceans, SEE: Atlantic Ocean, Pacific Ocean, Etc. | |||||||||||||
| File: Subject/Geographical | Oceans--Arctic Ocean | ||||||||||||
| Extent: empty | |||||||||||||
| SEE: Arctic | |||||||||||||
| File: Subject/Geographical | Oceans--Atlantic--Ridge | ||||||||||||
| Extent: empty | |||||||||||||
| SEE: Islands--Saint Peter & Paul Rocks | |||||||||||||
| SEE ALSO: U.S. Navy--Subs--Triton | |||||||||||||
| File: Subject/Geographical | Oceans--Barents Sea | ||||||||||||
| Extent: empty | |||||||||||||
| SEE: Shipping--Ships--Lenin | |||||||||||||
| File: Subject/Geographical | Oceans--Bering Sea | ||||||||||||
| File: Subject/Geographical | Oceans--Black Sea | ||||||||||||
| Extent: empty | |||||||||||||
| SEE: Russia--Anapa | |||||||||||||
| File: Subject/Geographical | Oceans--Dead Sea | ||||||||||||
| File: Subject/Geographical | Oceans--Foam | ||||||||||||
| File: Subject/Geographical | Oceans--Mediterranean Sea | ||||||||||||
| File: Subject/Geographical | Oceans--North Sea | ||||||||||||
| File: Subject/Geographical | Oceans--Red Sea | ||||||||||||
| File: Subject/Geographical | Oceans--Sea of Galilee | ||||||||||||
| File: Subject/Geographical | Oceans--Stations | ||||||||||||
| File: Subject/Geographical | Ocilloscopes | ||||||||||||
| Extent: empty | |||||||||||||
| SEE: Police Department--N.Y. City--Civilian Defense | |||||||||||||
| File: Subject/Geographical | Odd Fellows--Emblems | ||||||||||||
| File: Subject/Geographical | Odd Fellows--New York State | ||||||||||||
| File: Subject/Geographical | Odors | ||||||||||||
| File: Subject/Geographical | Office Machines | ||||||||||||
| Extent: empty | |||||||||||||
| SEE: Business Machines | |||||||||||||
| File: Subject/Geographical | Offices | ||||||||||||
| Extent: 25 photos | |||||||||||||
| File: Subject/Geographical | Ohio--Akron | ||||||||||||
| Extent: 3 photos | |||||||||||||
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