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| Trimble formed from Gallatin, 1837. | Trimble loses area to creation of Carroll, 1838. | Trimble gains area with Henry, 1843. | |||
| Boundary changes in Trimble County since it's inception. In addition to those shown, there were two lesser changes involving unique property owners: in 1842 with Oldham, and in 1850 with Henry. | |||||
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| Trimble County, 1889 red line is a proposed railroad |
Trimble County, 1935 red lines are roads, black lines are railroads |
Trimble County, 1940 a map of magisterial districts |
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| Mt. Byrd (1953) | Milton (1953) | Eastern Tip (1953) |
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| Wise's Landing (1953) | Bedford (1953) | Providence (1952) |
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| Southern Tip (1961) | ||
Geologic Structures, 1978
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| Robert Rennick drew this map showing locations of where, over time, there have been post offices in Trimble County. |
