1 cup butter 1 1/2 cups sugar 2 large eggs 2 3/4 cups flour 2 tsp cream of tartar 1 tsp baking soda 1/4 tsp salt 3 tbsp sugar 3 tbsp cinnamon Preheat oven to 350 degrees. In a large bowl, mix the butter 1 1/2 cups sugar and the eggs together. In another bowl, combine the flour, cream of tartar, soda and salt. Blend into the butter mixture. Place the dough and an ungreased cookie sheet in the refrigerator to chill for about 15 minutes. While dough chills, mix the 3 tablespoons of sugar and the cinnamon together in a small bowl. Make 1-inch balls with the dough and roll them in the cinnamon mixture to coat. Place on the chilled cookie sheet/s and bake for 10 minutes. Remove immediately from the cookie sheets after removing from oven.