Some 1 million people will take part in the month-long Memphis In May International Festival every weekend starting May 2. Among the 75 events scheduled around town are the Beale Street Music Festival, the World Championship Barbecue Cooking Contest and the Sunset Symphony, a symphony picnic featuring fireworks over the Mississippi River. Call 901- 525-4611 for a schedule of events and admission prices . . .The Bessie Smith Traditional Jazz Festival in Chattanooga, Tennessee, celebrates New Orleans jazz May 2-4 at the Holiday Inn Chattanooga Choo Choo (1400 Market St.). Call 423-266-0944 for more information . . . On exhibit May 18 to June 29 at The Birmingham Civil Rights Institute (520 16th St. N.; 205-328-9696) is Climbing Jacob’s Ladder: The Rise of Black Churches in Eastern American Cities, which chronicles the rise of the black church from 1740 to Reconstruction . . . Doll collectors gather at the ninth annual Black Doll Convention Show in Philadelphia at the Pennsylvania Convention Center (at the corner of 12th and Arch streets) May 31 and June 1. Admission is $5. Call 215-924-3121 for more information.