Potomac River. Bridge across Potomac River at point near Point of Rocks in Frederick County, Md., report to accompany H. R. 4706 [authorizing State Roads Commission of Maryland and State Highway Department of Virginia to construct free highway bridge across Potomac River at or near point in vicinity of Point of Rocks in Frederick County, Md., and point near south end of Loudoun County, Va., to take place of bridge destroyed by flood in 1936]; submitted by Mr. Cole of Maryland.