St. Croix River. Free bridge at Hudson, Wis., hearings before bridge subcommittee, 77th Congress, 1st session, on H. R. 4314, authorizing Minnesota and Wisconsin, jointly or separately, to acquire bridges now existing or to construct free highway bridge across St. Croix River, also known as Lake St. Croix, at or near Hudson, Wis., May 7, 1941.