Spencer Tracy

Thomas A. Edison

Charles Coburn

General Powell

Lynne Overman

Bunt Cavatt

Rita Johnson

Mary Stilwell

Gene Lockhart

Mr. Taggart

Henry Travers

Ben Els

Felix Bressart

Michael Simon

Peter Godfrey

Ashton

Guy D'Ennery

Lundstrom

Byron Foulger

Edwin Hall

Milton Parsons

'Acid' Graham

Arthur Aylesworth

Bigelow

Gene Reynolds

Jimmy Price

Addison Richards

Mr. Johnson

Grant Mitchell

Snade

Paul Hurst

Sheriff

George Lessey

Toastmaster

Jay Ward

John Schofield

Ann Gillis

Nancy Grey

Erville Alderson

First Lecturer

William Arnold

Minor Role

Hooper Atchley

Broker

Irving Bacon

Sheriff

Arthur Belasco

Broker

Edward Biby

Party Guest

Billy Bletcher

Reporter

Harry C. Bradley

Preacher

Harlan Briggs

Bisbee

Fritzi Brunette

Minor Role

John Butler

Mechanic

James Carlisle

Party Guest

George Chandler

Gold Exchange Clerk

Howard Chase

Minor Role

James Conaty

Party Guest

Jimmy Conlin

Waiter

Nick Copeland

Reporter

Maurice Costello

Broker

Nell Craig

Woman

Jack Daley

Minor Role

Edgar Dearing

Policeman

Helen Dickson

Minor Role

John Dilson

Broker

Donald Douglas

Jordan

Edward Earle

Broker

Frank Faylen

Galbreath

Walter Fenner

Man at Banquet

Eddie Gribbon

Cashier

Hale Hamilton

Broker

Sam Harris

Party Guest

Edward Hearn

Broker

Arthur Stuart Hull

Broker

Harry Humphrey

Broker

Edward Keane

Lecturer

Eve Kendall

Marion Estelle Edison

Milton Kibbee

Workman

Charles Lane

Second Lecturer

Edward LeSaint

Doctor

Wilfred Lucas

Broker

Tom Mahoney

Policeman

Eric Mayne

Party Guest

Ralph McCullough

Reporter

George Meader

Minister

Harold Minjir

Blair

Bruce Mitchell

Coachman

Hans Moebus

Party Guest

Edmund Mortimer

Party Guest

Forbes Murray

Broker

Louis Natheaux

Broker

Alex Novinsky

Party Guest

William H. O'Brien

Waiter

George Ovey

Lamplighter

Thomas Pogue

Minor Role

Alexander Pollard

Butler

Cyril Ring

Reporter

Count Stefenelli

Party Guest

Harry Strang

Minor Role

Charles Trowbridge

Clark

Emmett Vogan

Secretary

Charles Waldron

First Commissioner

Frank Whitbeck

Trailer Narrator (voice)

Joe Whitehead

Minor Role

Lloyd Whitlock

Broker

Robert Winkler

Newsboy