Radio: Program Preview, Jul. 1, 1946

For seven days, beginning Sunday, June 30. (All times are E.D.S.T.)

Chicago Round Table (Sun. 1:30 p.m., NBC). "Education and the GI.s."

A-Bomb Prelim (Sun. 3, 6, 8, 11:15 p.m., all networks). CBS Correspondent Bill Downs, from an observation plane, covers the proceedings at Bikini.

The National Hour (Sun. 4 p.m., NBC). Robert St. John and Robert McCormick discuss Operation Crossroads with three on-the-spot correspondents.

NBC Symphony Orchestra (Sun. 5 p.m., NBC). Vladimir Golschmann conducts Shostakovich's Fifth.

Exploring the Unknown (Sun. 9 p.m., Mutual). Clifton Fadiman tells the atomic story from Oak Ridge to Bikini.

Report on Bikini (Mon. 6:15 p.m., CBS). Bill Downs reviews the tests.

Nelson Eddy (Mon. 9 p.m., NBC). Baritone standbys like Vincent Youmans' Great Day and Jerome Kern's 01' Man River.

Fables in Swing (Mon. 9:30 p.m., NBC). Benny Goodman begins a new series for jitterbugs, with Martha Tilton as opening guest.

Fred Waring (Tues. 9:30 p.m., NBC). Summer replacement for Fibber Mc.Gee and Molly.

Academy Award Theater (Wed. 10 p.m., CBS). The spooky Maltese Falcon with Sydney Greenstreet, Mary Astor and Humphrey Bogart.

The Fifth Horseman (Thurs. 10:30 p.m., NBC). First of a series dramatizing the peacetime potential of atomic energy.

"World Peace and World Health" (Sat. 7 p.m., NBC). Speakers: Alexandre Parodi, French delegate, U.N. Security Council; Sir William Jameson, United Kingdom delegate to the World Health Conference, and Durward Sandifer, U.S. adviser to the conference.