Dan Flavin - untitled (for you Leo, in long respect and affection) 4(1978)
Dan Flavin - Untitled (to the “innovator” of Wheeling Peachblow), 1966-68
pink out of a corner (to Jasper Johns), Dan Flavin, 1963,MoMA: Painting and Sculpture
http://www.moma.org/collection/works/80892