They are the quintessential Wild West outlaws, but Butch Cassidy and the Sundance Kid were still robbing people in this century. And even though the 1969 film cast the beautiful Paul Newman and Robert Redford, it cannot take all the blame for romanticizing the less photogenic Robert Leroy Parker and Harry Longabaugh, who were already celebrated in their time. Neighbors in Argentina remember them fondly as the gentleman ranchers they became, and reports of their deaths only prompted Elvis-like sightings. Some believe Butch made it back to America and died quietly in Spokane in 1937. Dan Buck and Anne Meadows don’t buy that, but they unearthed equally fascinating insights for their book, Digging Up Butch and Sundance. The husband-and-wife team will present a slide-illustrated lecture, “What Really Happened to Butch and Sundance,” at 6 p.m. at the Hirshhorn Museum & Sculpture Garden’s Ring Auditorium, 7th & Independence Ave. SW. $13. For reservations call (202) 357-3030. (Dave Nuttycombe)