Lemon or Orange Jelly Cake.
1 cup butter, 2 cups sugar, 2/3 cup milk, 4 eggs, 3 cups sifted flour, and 1 heaping teaspoon baking powder. Bake in four layers.
1 small cup sugar, 1 egg. Grate the rind and use juice of 1 lemon or orange, 1 tablespoon water, 1 teaspoon flour. Place the dish in a kettle of boiling water and let it thicken. When cool spread between the cakes. This is very nice for any layer cake.
From "The Cookery Blue Book" by Society for Christian Work of the First Unitarian Church, San Francisco, California, 1891