Cranberry Pie

From the 1941 cookbook of The Infant Welfare Circle of the King’s Daughters, Appleton, WI

2 C halved cranberries
1 1/2 C white sugar
3/4 C water
1 heaping t tapioca
1/4 t salt
1 T butter

Preheat oven at 450 F. Mix cranberries, sugar, water, salt, and tapioca, and let stand a half hour, Put mixture into unbaked pie crust, dot with butter, and cover with an upper crust. Bake at 450 degrees for 15 minutes, reducing heat to 350 degrees the last 35 minutes.