Public [act] 530-608, 74th Congress. Missouri River. H. R. 10589, act to amend sec. 32 of act to authorize construction of certain bridges and to extend times for commencing and/or completing construction of other bridges over navigable waters of United States, and for other purposes, approved Aug. 30, 1935 [so as to authorize Knox County, Nebr., instead of Niobrara, Nebr., to construct bridge across Missouri River at or near Niobrara, etc.].