Preheat oven to 350. Mix butter, 1 1/2 cups sugar and eggs thoroughly in a large bowl. Combine four, cream of tartar, baking soda and salt in a separate bowl. Blend dry ingredients into butter mixture. Chill dough, and chill and ungreased cookie sheet for about 10-15 minutes in the fridge. Meanwhile, mix 3 T. sugar and 3 tsp. cinnamon in a small bowl.
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