Glenn Ligon’s intertextual works examine cultural and social identity—often through found sources such as literature, Afro-centric coloring books, and photographs—to reveal the ways in which slavery, the civil rights movement, and identity politics inform our understanding of American society. In 2012, the Gallery acquired its first painting by Ligon, Untitled (I Am a Man) (1988). In honor of this acquisition, Ligon presented the 20th annual Elson Lecture on March 14, 2013, in conversation with associate curators of modern art Molly Donovan and James Meyer. Untitled (I Am a Man) is a reinterpretation of the signs carried by 1,300 striking African American sanitation workers in Memphis in 1968 and made famous in Ernest Withers' photographs of the march. Proclaiming "I Am a Man," the signs evoke Ralph Ellison's famous line—"I am an invisible man." Approximating the size of these signs, Ligon’s roughly made painting combines layers of history, meaning, and physical material in a dense, resonant object. As the first painting in which the artist appropriated text, it is a breakthrough. In subsequent works he would transform texts into fields of semilegible and masked meanings. The Gallery owns sixteen works by Ligon, including a suite of etchings and a print portfolio.