| 1. CASDE | Ong -- Clay County
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| Platted in 1886 and was one of the designated stations on the Burlington and Missouri River Railroad. Includes its history, with photographs. |
| http://casde.unl.edu/history/counties/clay/ong |
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| 2. Wikipedia - Ong, Nebraska
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| Encyclopedia article provides a brief geography and demographics of this village. |
| http://en.wikipedia.org/wiki/Ong,_Nebraska |
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