I didn't get a chance to photograph the cake, but here's the invitation...
Click on to enlarge
The original recipe called for a boxed frosting mix that Pillsbury discontinued. Besieged by customer requests for a substitute recipe, Pillsbury developed this one.
The March 1950 issue of McCall's magazine was the first major women's magazine to feature a photograph of food on the cover. This is the tattered copy I snagged when I learned that the food in question was a cake . . .