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Historical Markers and War Memorials in Mason County
Havana is the county seat for Mason County
Adjacent to Mason County, Illinois
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| On North Oak Street (Illinois Route 78) south of West Lincoln Street, on the right when traveling south. |
| On West Market Street west of North Schrader Street, on the left when traveling west. |
| On North Plum Street at West Main Street, on the right when traveling north on North Plum Street. |
| On West Franklin Street at North Orange Street, on the right when traveling west on West Franklin Street. |
| On North Plum Street north of West Main Street, on the right when traveling north. |
| On West Franklin Street at North Orange Street, on the right when traveling east on West Franklin Street. |
| On West Franklin Street near North Orange Street, on the right when traveling west. |
| On Illinois Route 29 at County Route 800N, on the left when traveling north on Illinois Route 29. |
Nov. 10, 2026
