Lisa Stone will shed light on the artwork of Roger Brown and other artists known as the Chicago Imagists in a free, public lecture at 6 p.m. Feb. 20 at Sheldon Museum of Art.

Brown was part of an energetic and irreverent group of Chicago-based artists. Influenced by folk and ethnographic arts, comic books and surrealism, the Chicago Imagists created art that reflected the radical social transformations of the 1960s. Most of the artists in the group came of age while studying at the School of the Art Institute of Chicago and exhibited their work together at the Hyde Park Art Center on the city’s south side.

Works by Brown and the Chicago Imagists are featured in a gallery installation in the current Sheldon exhibition “Re-Seeing the Permanent Collection: The Long 1968.” The exhibition is on display until July 29.

Stone is the curator of the Roger Brown Study Collection at the School of the Art Institute of Chicago.