June 11
| 1910 | OPR moves to a larger building at 14th and B Streets, SW., Washington, DC, between B and C Streets. The building, formerly occupied by the Agriculture Department's Bureau of Chemistry, has been thoroughly remodeled to suit OPR's needs. |
| 1960 | U.S. Senator Harry F. Byrd of Virginia opens the Blue Ridge Parkway Bridge over the James River. The ceremony allows the use of 114 continuous miles of parkway from Shenandoah National Park to U.S. 460 outside Roanoke, VA. F. W. Cron, Regional Engineer for Region 15, attends the ribbon-cutting, noting that the excellent condition of the highway is a tribute to the NPS's maintenance activities. |
