Program Preview

For the week starling Friday, Aug. 1. Times are E.D.T., subject to change.

RADIO

Summer Symphony (Sat. 6:30 p.m., NBC). Arturo Toscanini conducting a program of semiclassical works.

American Forum of the Air (Sun. 10:30 p.m., NBC & NBC-TV). Secretary of the Interior Oscar L. Chapman and Delaware's Republican Senator John J. Williams discussing "How Bad Is Corruption in Washington?"

TELEVISION

Curtain Call (Fri. 8 p.m., NBC). John P. Marquand's Swell Girl, with Wendell Corey and Victoria Ward.

Guess What Happened? (Thurs.8:30 p.m., NBC). Debut of a panel show aimed at discovering what big news stories some plain citizens have helped to make; with Moderator John Cameron Swayze, Comic Roger Price, Humorist H. Allen Smith.

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