One of the central figures of the Pop Art movement, Robert Indiana takes his inspiration from commercial signs, claiming: âThere are more signs than trees in America. There are more signs than leaves. So I think of myself as a painter of American landscape.â In his paintings, sculptures, and prints, he mimics and re-arranges the words and numbers of a myriad of signs, including the Phillips 66 gas station logo and the âYieldâ traffic sign. He is most famous for his âLOVEâ paintings and sculptures, first produced in the 1960s. Creating a block out of the wordâwith the âLâ and the âOâ set atop the âVâ and the âEââIndiana has effectively inserted his own sign into the mix.