William E. Campbell and Gwendolyn J. Campbell, Cross v. United States of America, Cross-Appellant , 813 F.2d 694 ( 1987 )
Kuhns v. State Tax Commission , 223 Or. 547 ( 1960 )
Okorn v. Dept. of Rev. , 11 Or. Tax 385 ( 1990 )
Moser v. Dept. of Rev. , 4 Or. Tax 256 ( 1970 )