Preheat oven to 350 degrees. Coarsely grate squash. Mix dry ingredients, except sugar and blend well. Beat eggs until frothy. Add sugar, oil and vanilla to eggs and beat until lemon colored, about 3 minutes. Stir in squash. Add dry ingredients. Mix just until moistened. Pour into a slightly greased loaf pan. Bake 40 minutes or until toothpick inserted in middle of loaf comes out clean. Cool on wire rack. Remove from pan after 10 minutes.