united-air-lines-incorporated-v-international-association-of-machinist , 243 F.3d 349 ( 2001 )
Locomotive Engrs. v. L. & NR Co. , 83 S. Ct. 1059 ( 1963 )
Chicago & North Western Railway Co. v. United Transportation Union , 91 S. Ct. 1731 ( 1971 )