You know his work: the cover for The Beatles’ ” White Album,” “Swingeing London,” depicting the arrest of Mick Jagger and Robert Fraser (also the cover of Hal Foster’s forthcoming The First Pop Age) and most famously, “Just What Is It That Makes Today’s Homes So Different, So Appealing?”  The latter piece is often identified as the first example of Pop Art, well before Warhol came on the scene.  The New York Times reported that the artist died yesterday at the age of 89.