Robert Indiana's third solo exhibition at the Stable Gallery, sometimes referred to as the "LOVE Show," included five large-scale LOVE paintings, his first LOVE sculpture (1966) and the Cardinal Numbers series (1966). The majority of the works in the show were painted in red, green, and blue, a color combination the artist associated with his father, Earl Clark, who had been employed by Phillips 66. Ingrained in his mind was the company’s red and green neon sign, which stood out boldly against a blue Indianapolis sky.