Here is a small clipping found in a big box of old recipes. It was clipped from Woman’s Day Kitchen (November 1943), two small clipped pieces glued together. Recipe follows below:

CANDIED GRAPEFRUIT OR ORANGE PEEL
Costs 5 cents (November 1943) Woman’s Day Kitchen

Peel of 1 large grapefruit or 3 large oranges
1 1/2 cups sugar
1/2 cup water

Cover peel with cold water. Bring to a boil and cook until tender, pouring off the water and adding fresh cold water several times. Drain; cut peel into thin strips with scissors. Make syrup by boiling 1 cup sugar and 1/2 cup water until it threads. If red or green peel is desired, add a few drops of vegetable coloring to syrup. Add peel and cook over low heat until syrup has been absorbed. Roll each strip in remaining sugar until coated. Let cool before packing.