"Caucus" is an offset lithograph created by Robert Rauschenberg in 1997. The image size is 37 x 27 - inch. The framed size is 50.5 x 40.5-inch. The lithograph was created in tribute to the iconic New York art dealer Leo Castelli (1907–1999), who played a pivotal role in postwar American art’s rise to international dominance. The serigraph was one of nine prints commissioned by Castelli’s son, Jean-Christophe, for a portfolio issued in honor of the gallerist’s 90th birthday. The portfolio contains prints by Jasper Johns, Ellsworth Kelly, Joseph Kosuth, Roy Lichtenstein, Bruce Nauman, James Rosenquist, Robert Rauschenberg and Richard Serra, all of whom were represented by Castelli at various times throughout their careers. "Caucus" comes signed and with a certificate of authenticity.