Pictured on one of ten USA nondenominated commemorative postage stamps celebrating "20th Century Poets", issued as a pane of 20 stamps on 21 April 2012. Other stamps in this issued honored
Joseph Brodsky,
Gwendolyn Brooks,
E.E. Cummings,
Sylvia Plath,
Wallace Stevens,
William Carlos Williams, Robert Hayden, Denise Levertov, and Theodore Roethke. The price of each stamp on day of issue was 45¢.