This is from an old cookbook at Slate Run Living Historical Farm where I once volunteered. Unfortunately I evidently didn’t remember to write down which cookbook, so you’ll have to take my word for it. At any rate, it’s a simple cake and delicious. I don’t think you need any sort of frosting. The directions are minimal as directions from the time period often are.
1 cup butter
3 cups sugar
1 cup milk
5 egg whites
3 cups flour
3 teaspoons cream of tartar
1 teaspoon soda (i.e., baking soda)
Mix together (I do it in order). Bake until done.
I know the recipe isn’t terribly helpful, but I commonly use a 9-inch round cake pan and put the oven at about 350 degrees. I’m not sure how long it will take to be “done.” The cake is still worth it.