Preheat oven to 350 degrees. Line two cookies sheets with parchment paper. Set aside.
In a medium bowl, whisk together flour, baking soda, cream of tartar, salt and cinnamon.
In a large mixing bowl, beat the sugar and butter together until creamy. Add eggs and vanilla. Beat until combined.
With mixer on low speed, gradually add dry ingredients to wet.
In a small bowl, combine remaining sugar and cinnamon for topping.
Roll dough into golf ball size balls. Roll each ball in topping mixture. Place on baking sheets at least 2 inches apart.
Bake cookies for 9-11 minutes--just until set. Allow to cool on baking sheets for 2-3 minutes. Transfer to a wire rack and let cool completely.
Store cookies in an airtight container at room temperature for up to 5 days.