From: Family Favorites of Black Rock Retreat Auxiliary Members
      Lancaster Co., Pennsylvania

2 cups flour
1/2 cup 10x sugar
1 cup butter

Mix well and pack into greased 9x13 inch pan. Bake for 20 minutes at
350 degrees.

Mix lightly:
   4 eggs,
   pinch of salt,
   2 cups sugar,
   6 tbsp lemon juice and fold in 
   4 tbsp flour mixed with 
   1 tsp baking powder.
Pour topping on crust and bake an additional 25 minutes at 350 degrees.
Sprinkle with powdered sugar.
When cool, cut in bars.