4 N.W.2d 82 ANTON T. JOHNSON v. NORTHERN OIL COMPANY.[1] No. 32,924.Supreme Court of Minnesota. April 10, 1942. [1] Reported in 4 N.W.2d 82. Contract — modification — necessity of consideration. In order to render it enforceable, an agreement for the modification of a bilateral, executory contract must be for a valuable consideration. Action in […]