George Hamilton

Moss Hart

Jason Robards

George S. Kaufman

Jack Klugman

Joe Hyman

Sam Levene

Richard Maxwell

Ruth Ford

Beatrice Kaufman

Eli Wallach

Warren Stone

Joseph Leon

Max Seigel

George Segal

Lester Sweyd

Sam Groom

David Starr

Sammy Smith

Sam H. Harris

Louise Larabee

Clara Baum

David Doyle

Oliver Fisher

Jonathan Goldsmith

Teddy Manson

Bert Convy

Archie Leach

Drummond Erskine

Franklyn P. Adams

Kenneth Mars

Robert E. Sherwood

Roger C. Carmel

Hotel Clerk (uncredited)

Janet Fox

Edna Ferber (uncredited)

Sylvie Strause

Mrs. Hart

Martin Wolfson

Mr. Hart

Earl Montgomery

Alexander Woollcott

Arno Selco

Bernie Hart

Joe Demar

Heywood Broun

Bill Desmond

George Jean Nathan

Allen Leaf

Harry the Waiter

Lulu B. King

Maid

Jack English

Elevator operator (uncredited)

Bryce Holman

Minor Role (uncredited)