1/2 c. Butter
1/2 c. Shortening
1 1/2 c. Granulated Sugar
2 Eggs
2 3/4 c. Flour
2 tsp. Cream of Tartar
1 tsp. Soda
1/4 tsp. Salt
2 Tbsp. Granulated Sugar
2 tsp. Cinnamon

Cream together butter, shortening,  1 1/2 c. sugar and eggs.
Blend in flour, cream of tartar, soda and salt.
Shape dough into 1″ balls.
Mix together 2 Tbsp. sugar and cinnamon.
Roll balls in mixture. Place on parchment lined cookie sheet.
Bake 8 -10 minutes at 400° F.