1. Preheat oven to 400 degrees
2. Cream together butter, shortening, 1 1/2 cup sugar, the the eggs and the vanilla. blend in the flour, cream of tartar, soda, and salt. Shape dough ny roundd spoonfuls into balls.
3. Mix the 2 tablespoons sugar and the cinnamon. Roll balls of dough in mixture. place 2 inches apart on ungreased baking sheets.
4. Bake 8 to 10 minutes, or until set but not too hard. Remove immediately from baking sheets.
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