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Historical Markers in Chautauqua County
Sedan is the county seat for Chautauqua County
Adjacent to Chautauqua County, Kansas
Osage County, Oklahoma (33) ► Washington County, Oklahoma (11) ►
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| On Main Street (U.S. 166) at Douglas Street, on the left when traveling west on Main Street. |
| On Main Street (U.S. 166) at Douglas Street, on the right when traveling west on Main Street. |
| On Main Street (U.S. 166) at Douglas Street, on the right when traveling west on Main Street. |
Nov. 11, 2026