United Steelworkers of America, Afl-Cio v. Butler Manufacturing Company , 439 F.2d 1110 ( 1971 )
local-union-no-4-international-brotherhood-of-electrical-workers-afl-cio , 469 F.2d 610 ( 1972 )
National Labor Relations Board v. Local Union No. 103, International Ass'n of Bridge, Structural & Ornamental Iron Workers , 98 S. Ct. 651 ( 1978 )