. . . . . . . "Crossing of the Potomac River in the vicinity of Constitution Avenue : hearings before the Fiscal Affairs Subcommittee, Committee on the District of Columbia, United States Senate, Eighty-fifth Congress, first session on S. 944, providing for a tunnel across the Potomac River in the vicinity of Constitution Avenue and S. 1707, providing for a bridge across the Potomac River in the vicinity of Constitution Avenue : April 11, 17, and 25, 1957"@en . "Considers legislation to authorize the construction of the Theodore Roosevelt Bridge or a tunnel across the Potomac River in the vicinity of Constitution Avenue, D.C." . "Crossing of the Potomac River in the vicinity of Constitution Avenue: hearings before the Fiscal Affairs Subcommittee of the Committee on the District of Columbia, United States Senate, Eighty-fifth Congress, first session, on S. 944, providing for a tunnel across the Potomac River in the vicinity of Constitution Avenue and S. 1707, providing for a bridge across the Potomac River in the vicinity of Constitution Avenue. April 11, 17, and 25, 1957" . . . . . . . . . "Potomac River." . .