Oklahoma Historical Markers
See category Oklahoma Historical Markers on Waymarking.com .
Last import of category containing 775 waymarks in 1 different countries with 1 regions was on 2024-12-03.
| First in country | Country | Region | Owner | Approved on | WM-Code | Title |
|---|---|---|---|---|---|---|
| United States | Oklahoma | BruceS | 2008-10-09 | WM4XB9 | State's Earliest Oil Refinery |