Good-Cooking - General Robert E. Lee Cake

Ingredients

• 2 cups sifted all-purpose flour
• 1/2 teaspoon cream of tartar
• 1 1/2 teaspoons baking powder
• 8 eggs, separated
• 2 cups granulated sugar
• Grated rind and juice of 1 lemon
• Dash of salt
• 6 egg yolks
• Grated rind of 2 lemons
• Juice of 4 lemons
• 1/2 cup butter
• 1/4 cup butter
• 6 cups confectioners' sugar, sifted
• 1 egg yolk
• 2 tablespoons lemon juice
• 3 to 4 tablespoons orange juice
• Grated rind of 1 lemon
• Grated rind of 2 oranges