Chocolate Chip Cake
from the 1950s

1 cup shortening softened
2 cups sugar
3 1/3 cups flour
1 tsp. baking powder
1 tsp. salt
1 1/2 cups skim milk
2 tsp. vanilla 
6 egg whites beaten
semi-sweet chocolate shaved
Blend together. Add shaved semi-sweet chocolate to batter. 
Pour into a 13 by 9 cake pan. Bake 350 degrees for 30 minutes 
or until done. Sprinkle shaved chocolate on frosting when done.