Watermelon Cake
["2 c. all-purpose flour", "2 tsp. double-acting baking powder", "1 c. sugar", "1/3 c. plus 1/2 c. real butter", "3/4 c. milk", "1 tsp. vanilla", "2 egg whites", "1/2 c. raisins", "red food coloring", "1 recipe Green Icing (recipe follows)"]
["This historic recipe has been transcribed from the original text in the 1883 version of the First Texas Cookbook."]
["flour", "double-acting baking powder", "sugar", "butter", "milk", "vanilla", "egg whites", "raisins", "red food coloring"]