Cream together:
2 Cups butter (room temperature)
3 Cups Sugar
4 eggs
Then blend in:
5 ½ Cups Flour
4 teaspoons Cream of Tartar
2 teaspoons Soda
½ teaspoon Salt
Mix until cookie dough.
Roll into balls and then roll in cinnamon and sugar mixture.
Bake at 375° for 8-10mins. Just until light brown around the edges.