This section is from the book "Best Recipes For Baking. A Book For The Home", by John William Schroers. Also available from Amazon: Best recipes for baking.
One and one-half cup boiled and pulped sweet potatoes.
One and one-half cupfuls milk.
Three-fourths cup sugar.
One-half teaspoonful lemon or two tablespoonful brandy.
Yolks of two eggs (save whites).
Mix the potato, milk, sugar, eggs, salt and flavoring all together. Line a pie tin with a rich pie dough and bake in a hot oven until a light brown. Beat the whites stiff, adding tablespoonful sugar, spread on top and return to oven and brown.
Peel the potatoes and bake, when cool slice in small slices into a deep pan lined with a good crusty lay a layer of slices, sprinkle with sugar, repeat until pie is filled, put two tablespoonful melted butter in, pour in a little milk or cream, put on top crust and bake in hot oven a light brown.
 
Continue to: