2. Combine butter and sugar.
3. Blend in eggs one at a time.
4. Combine flour, baking soda, cream of tartar, and salt in separate bowl.
5. Add flour mixture to the rest a little at at time.
6. Combine sugar and cinnamon in a shallow dish.
7. Shape dough into 1/4 in balls and roll in the cinnamon/sugar mixture.
8. Bake on a cookie sheet for 9 min. Makes about 2 dozen.