Fresh Strawberry and Watermelon Frozen Treats

Description
This recipe came from an estate sale. I obtained it when I purchased the family collection from the Morgan Estate in Austin, Texas in 1982.
 * Contributed by Catsrecipes Y-Group

Ingredients

 * 1 ripe fresh watermelon
 * 1 pint fresh picked strawberries
 * ¼ cup fresh squeezed lemon juice
 * ⅓ cup granulated sugar

Directions

 * 1) Scoop out the red watermelon flesh and put into a large mixing bowl.
 * 2) Remove seeds and mash watermelon until smooth.
 * 3) Clean and hull the strawberries.
 * 4) Mash strawberries and add to the mixing bowl.
 * 5) Add lemon juice and granulated sugar.
 * 6) Mix well until all ingredients are well combined.
 * 7) Pour into several ice cube trays.
 * 8) Freeze overnight.