| Cedar County Post Office History 1833-1986 |
| Postal Service of Cedar County, Iowa 1863 |
| Postal Service of Cedar County, Iowa 1869 |
| Postal Service of Cedar County, Iowa 1879
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| Postal Service of Cedar County, Iowa 1889 |
| Postal Service of Cedar County, Iowa 1899
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| Postal Service of Cedar County, Iowa 1905 |
