Preheat oven to 350 degrees
Mix butter, 1 ½ cups sugar, and eggs thoroughly in large bowl
Combine flour, cream of tartar, baking soda, and salt in a separate bowl
Fold dry ingredients into butter mixture
Chill dough and a cookie sheet in the refrigerator for about 15 minutes
Meanwhile, mix 3 tbs sugar and 3 tbs cinnamon in small bowl
Scoop 1 inch balls of dough into the cinnamon and sugar mixture and roll around to coat
Place on chilled, ungreased cookie sheet, and bake for 10 minutes
Remove from cookie sheet immediately after cooking