Supreme Court of North Dakota December 1968 casesState v. HelmensteinWilliams Bros. Pipe Line Co. v. City of Grand ForksGraven v. BackusShermoen v. LindsaySatrom v. City of Grand ForksKoland v. JohnsonMitzel v. SchatzIn re Estate of JensenThompson v. NettumKeller v. Keller