Editor’s note: “The Dust Bowl,” 120 minutes, Part 1, The Palm, Saturday, May 26, 9:30 a.m., Wilkinson Public LIbrary, Saturday, May 26, 8:30 p.m. Part 2, The Nugget, Sunday, 11:45 a.m., Monday, May 28, Masons, 9:15 a.m. Co-producer Julie Dunfey of Ken Burns’s team is...