Cream together butter, shortening, 1 1/2 cups sugar, the eggs and the vanilla. Blend in the flour, cream of tartar, baking soda and salt.
Shape dough by rounded spoonfuls into balls, about 1 inch in diameter.
Combine the sugar and the cinnamon in a bowl. Roll balls of dough in the mixture and place each on an ungreased baking sheet spaced about two inches apart.
Bake the cookies 8 to 10 minutes, or until set. Remove immediately from baking sheets.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.