Hot Milk Sponge Cake (Spring Form Pan)

This is one of the handwritten recipes!

Measure 1 cup sifted flour. Add 1 teaspoon baking powder and sift together three times. Beat 3 eggs until very thick and light and nearly white. Add 1 cup sugar gradually, beating constantly. Add 2 teaspoon lemon juice. Fold in flour, alternately w/6 Tablespoons hot milk, mixing quickly until batter is smooth. Bake at once 350 F 45 minutes. Remove from oven and invert pan 1 hour or until cold.