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Historical Markers and War Memorials in Mercer County
Princeton is the county seat for Mercer County
Adjacent to Mercer County, Missouri
Decatur County, Iowa (8) ►
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| Near Emmy Place (U.S. 65) just north of Design Place (Empire Loop), on the right when traveling north. |
| On West Main Street at North Broadway Street, on the right when traveling east on West Main Street. |
| On East Main Street at South Broadway Street, on the left when traveling west on East Main Street. |
| On East Main Street at South Broadway Street, on the left when traveling west on East Main Street. |
| On Fleetwood Street at Gemstone Avenue, on the left when traveling east on Fleetwood Street. |
Oct. 24, 2026
