1/2 lb. butter
2 c. sugar
2 tsp. vanilla
4 eggs
4 c. flour
2 tsp. baking soda
2 1/2 tsp. baking powder
2 c. sour cream
1/4 tsp. salt

Whip butter and sugar until light and feathery. Add eggs, vanilla and beat until lemony in color. Sift the flour, baking powder, baking soda, salt and add alternately with sour cream. Grease and flour a 10 inch tube pan 4 inches deep. Pour 1/2 of the above mixture into the baking pan and distribute some of the crumb mixture on top. Pour rest of mixture in and distribute rest of crumb mixture. Bake in preheated oven at 350 degrees for 1 1/4 hours.

CRUMBS:

2 tsp. cinnamon
1/4 c. sugar
1/2 c. walnuts, crushed

Mix together.