Whip cream until firm. Add eggs, one at a time. Beat until light and fluffy. Add sugar, beat again. Add vanilla. Stir flour before measuring. Sift again with salt and baking powder. Stir in flour. Pour into 2 - 8" well greased pans, lined with greased waxed paper. Bake in preheated 375 degree oven for 20 to 25 minutes.