Here’s an old clipping from a box of C and H Sugar, date unknown. Recipe is typed below along with a scanned copy.

FROSTINGS
PINK PERFECTION FROSTING
Fluffy and velvety smooth!

1 pound C and H Powdered Sugar
1/4 cup (2 medium) egg whites
1 teaspoon vanilla
1/8 teaspoon salt
1 tablespoon water
1/3 cup (2/3 stick) soft butter or margarine
Red food coloring

Combine all ingredients except food coloring in mixer bowl. Blend at low speed, then beat at high speed until smooth and fluffy, about 5 minutes. (Scrape bowl often.) Beat in red food coloring a drop at a time until frosting is a luscious pink. (if too stiff, beat in a few drops of water.) Frosts tops and sides of two 8″ or 9″ layers.