National Labor Relations Board v. Overland Hauling, Inc. , 461 F.2d 944 ( 1972 )
National Labor Relations Board v. Martin Building Material Co., Inc. , 431 F.2d 1246 ( 1970 )
National Labor Relations Board v. Claxton Poultry Co., Inc. , 581 F.2d 1133 ( 1978 )