1 c. butter
1 c. oil
2 eggs
1 c. sugar
1 c. powdered sugar
4 1/2 c. flour
1 tsp. cream of tartar
1 tsp. baking soda
1 tsp. salt
1 tsp. vanilla
1/2 tsp. lemon juice

Cream butter, oil, sugar and powdered sugar. Add eggs. Add sifted dry ingredients. Add vanilla and lemon. Spoon onto cookie sheet. Press flat with sugared glass. Bake 15 minutes at 325 degrees.