Scott W. Perkins, recently appointed director of preservation for Fallingwater, Frank Lloyd Wright’s most famous residential design, will speak at 7 p.m. today in the Burchfield Penney Art Center, 1300 Elmwood Ave.

The talk is on “Inside/Outside: Transitional Space in the Work of Frank Lloyd Wright” and is presented by Graycliff Conservancy.

Perkins is the author of “Building Bartlesville, 1945-2000,” and co-author of “The Guggenheim: Frank Lloyd Wright and the Making of the Modern Museum.”