Old Fashioned Orange Marmalade

Yield: 
4.0 pints
Ingredients: 
6 Oranges, peeled
1 Lemon, unpeeled
11 cups cold water
7 cups Sugar
Preparation: 
1
Remove all white membranes from peeled oranges and slice thin. Slice unpeeled lemon. Cover oranges and lemon with water. Let stand in refrigerator for 24 hours. Boil for 3 hours, add sugar and boil 1 more hour. Put into sterile jars and seal.