Front:
Bnited r Lines
UN
Back:
POST
UNITEDI
Please address
and return to
stewardess who
will stamp and
mail for you ...
CARD
card
AIR LINES
PRINTED IN U.S.A. FROM UNITED AIRLINES KODACHROME
Mail and express is put aboard Uniteds'
4-engined 300 mile-an-hour Mainliner. In the
"Age of Flight" these planes will streak across
the country carrying 52 passengers and 5500
pounds of cargo.