Kathryn Lukosevicz (Widow of Alexander Lukosevicz) v. Director, Office of Workers' Compensation Programs, United States Department of Labor , 888 F.2d 1001 ( 1989 )
Josh Nelson v. American Dredging Company and Signal Mutual Insurance Co. , 143 F.3d 789 ( 1998 )
Richardson v. Perales , 91 S. Ct. 1420 ( 1971 )