Boom Town

Clark Gable

Big John McMasters

Spencer Tracy

Square John Sand

Claudette Colbert

Betsy Bartlett

Hedy Lamarr

Karen Vanmeer

Frank Morgan

Luther Aldrich

Lionel Atwill

Harry Compton

Chill Wills

Harmony Jones

Marion Martin

Whitey

Minna Gombell

Spanish Eva

Joe Yule

Ed Murphy

Horace Murphy

Tom Murphy

Marietta Canty

Maid

Curt Bois

Ferdie the Tailor

Richard Lane

Assistant D.A.

George Lessey

Judge

Sara Haden

Miss Barnes

Frank Orth

Barber

Charles Coleman

McMasters' Butler

Nell Craig

Compton's Secretary

Byron Foulger

Geologist

Harry Hayden

Architect

Eddy Waller

Hotel Desk Clerk in Burkburnett

Roy Gordon

McCreery

Casey Johnson

Little Jack

Baby Quintanilla

Baby Jack

Frank McGlynn Sr.

Deacon

Bess Flowers

Worker in McMasters' Office (uncredited)

Barbara Bedford

Nurse (uncredited)

Hank Bell

Hank - Man in Dance Hall (uncredited)

Charles D. Brown

U.S. Marshal Stebbins (uncredited)

Francis X. Bushman Jr.

Man with Nitroglycerine (uncredited)

Marietta Canty

Karen's Maid (uncredited)

Charles Coleman

Parker - McMasters' Butler (uncredited)

James Conaty

Man Working in McMasters' Office (uncredited)

Dick Curtis

Hiring Boss (uncredited)

Helen Dickson

Mrs. Summers (uncredited)

James Dime

Townsman (uncredited)

Eddie Dunn

Wildcatter (uncredited)

Franklyn Farnum

Alarmed Townsman (uncredited)

Pat Flaherty

Man at Dice Table (uncredited)

Sam Garrett

Rider / Roper (uncredited)

George Guhl

Baggage Man (uncredited)

Frank Hagney

Man Abandoned by Whitey (uncredited)

William Halligan

McCreery's Associate #2 (uncredited)

John Hamilton

McMasters' Defense Attorney (uncredited)

Tom Hanlon

Racetrack Announcer (voice) (uncredited)

Harry Hayden

Smith - the Architect (uncredited)

Holmes Herbert

Doctor (uncredited)

Howard Hickman

McCreery's Associate #1 (uncredited)

Earle Hodgins

Rodeo Barker (uncredited)

Shep Houghton

Saloon Brawler (uncredited)

Jack Ingram

Oilman at Producers' Convention (uncredited)

Sheldon Jett

Oil Man at Meeting (uncredited)

Robert Emmett Keane

Oilman in New York (uncredited)

Mitchell Lewis

Venezuelan Foreman (uncredited)

Tom London

Sheriff Harris (uncredited)

Frank McLure

Man in Hotel Lobby (uncredited)

Carlotta Monti

Saloon Hostess Fighting Whitey (uncredited)

Philip Morris

Oil Man (uncredited)

John T. Murray

Mr. Springtime (uncredited)

Wedgwood Nowell

Oilman at Producers' Convention (uncredited)

Ted Oliver

Man Asking 4 Bits to Cross (uncredited)

Nestor Paiva

Venezuelan Officer (uncredited)

Milton Parsons

Aldrich's Assistant (uncredited)

Lee Phelps

Man Fighting Oil Fire (uncredited)

Henry Roquemore

Mr. Summers (uncredited)

Larry Steers

Lawyer at Prosecution's Table (uncredited)

Bert Stevens

Hotel Lobby Extra (uncredited)

William Tannen

Hotel Desk Clerk #1 (uncredited)

Eddy Waller

Hotel Clerk (uncredited)

Harry Wilson

Townsman (uncredited)

Tom Wilson

Man in Saloon (uncredited)

Douglas Wood

Oil Man at New York Meeting (uncredited)