Aha! From Ancestry,

Sidney John Bartlett
Arrival Date: 21 Mar 1938
Birth Date: abt 1893
Birth Location: England
Birth Location Other: Lydbook
Age: 45
Gender: Male
Ethnicity/ Nationality: American;English (American)
Place of Origin: United States of America
Friend's Name: Henry James Gallatin
Port of Departure: Southampton, England
Port of Arrival: New York, New York
Ship Name: Queen Mary
Mother, Emily BARTLETT, Poplar Villas , Lydbrook
Destination, Mont, Fort Peck
Height, 6ft 2in
Complexion, MED
Hair, BRN
Eyes, GRN
Distinguishing marks, MARKS ON Nose