Sift the flour, baking powder, and salt together. Cream the shortening with ½ cup of sugar until fluffy and add the well-beaten egg yolks, vanilla, milk, and the sifted dry ingredients. Beat the egg whites until stiff but not dry and add the remaining sugar gradually, beating until the whites hold a sharp peak. Put the first mixture in two buttered layer cake pans and spread the egg white mixture over them. Sprinkle with the sugar and cinnamon mixed and then the almonds. Bake the layers in a 375 degree F oven for 25-30 minutes. The cake may be assembled and served as is, or with strawberries and whipped cream on top and between the layers.