Earl Horter: A Philadelphia Pioneer of Modern Art Earl Horter (1880-1940) stands as a pivotal, yet often overlooked, figure in American art history. Emerging from the bustling metropolis of Philadelphia during a period of rapid transformation, he was instrumental in introducing Cubism and Abstract art to the city’s artistic landscape – a role that cemented his legacy as a true innovator. More than just an artist, Horter was a collecto…