Prouty, L. (2011). Clyfford Still: Sold by the City of Denver to benefit the Clyfford Still Museum ; Contemporary Art New York 9.11.2011. Sotheby's.

Prouty, Leslie. Clyfford Still: Sold by the City of Denver to Benefit the Clyfford Still Museum ; Contemporary Art New York 9.11.2011. New York [u.a.]: Sotheby's, 2011.

Prouty, Leslie. Clyfford Still: Sold by the City of Denver to Benefit the Clyfford Still Museum ; Contemporary Art New York 9.11.2011. Sotheby's, 2011.