Lew Ayres

Dr. Myron Brown

Mae Clarke

Ruth Robbins

Una Merkel

Betty Merrick

Andy Devine

Clarence Howe

Oscar Apfel

Dr. Wilcox

Ethel Griffies

Nurse Lovett

Helen Jerome Eddy

Mrs. Gilman

Lorin Raker

Mr. Rosy

Blanche Payson

Mrs. Thomas

Arthur Hoyt

Mr. Thomas

Monte Montague

Ambulance Driver

Hattie McDaniel

Injured Patient (uncredited)

Ted Billings

Napoleon (uncredited)

Walter Brennan

Cigar Stand Proprietor (uncredited)

Elspeth Dudgeon

Neighbor (uncredited)

Francis Ford

Insane Asylum Warden (uncredited)

Mary Gordon

Irish Neighbor (uncredited)

Olaf Hytten

Doctor at Lecture (uncredited)

Edwin Maxwell

Prof. Von Mueller (uncredited)

Dick Winslow

Irish Neighbor's Son (uncredited)