This actually isn’t one of my cards. This is a card that Dave did back when we lived in California. I’ve always looked at this card and seen Wassily Kandinsky’s “Color Study:Squares with Concentric Circles”. You can find some of the images here.
The funny thing is at this point dave was probably 6 years old, and had likely never seen any of Kandinsky’s work. It wasn’t until we lived in Kansas that our parents, especially our mother, started teaching us about art.