1. In a large bowl cream together the butter and sugars with an eletric mixer on high speed. Add the eggs and vanilla then beat until smooth. 2. In another bowl, combine the flour, salt, baking soda, and cream of tarter. 3. Pour in the dry inredients and mix well. 4. Preheat the oven to 300 degrees while you let the dough rest in the refrigerator. 5. In a small bowl, mix the sugar and cinnamon for the topping. 6. Take about 2 1/2 tablespoons of dough and roll it into a ball. Roll in the cinnamon and sugar then press onto an ungreased cookie sheet. Repeat for the remaining cookies. 7. Bake the cookies for 12 to 14 minutes and no more. The cookies may seem under cooked, but but will continue to develop after they are removed from the oven. When the cookies have cooled they should be soft and chewy in the middle.