Preheat oven to 400°F and line a baking sheet with parchment paper. In large bowl, beat 1 1/2 cups sugar, the butter, shortening and eggs with electric mixer on medium speed until well mixed. Stir in flours, cream of tartar, baking soda and salt.
In small bowl, mix 3 tablespoons sugar and the cinnamon. Shape dough into 1 1/2-inch balls and roll in cinnamon-sugar mixture; place about 2 inches apart on prepared cookie sheets.
Bake 8 to 10 minutes or until set. Do not overbake! Cool 2 minutes on the pan then remove from cookie sheets. Store in an airtight container.