United Air Lines "3-Mile-A-Minute" Multi-Motored Boeing

Front:
13300 UNITED AIR LINES "3-MILE-A-MINUTE" MULTI-MOTORED BOEING TO PORTLAND. TACOMA SEATTLE. SPOKANE TO MINNEAPOLIS ST. PAUL TO GREAT FALLS BOSTON HELENA BUTTE DETROIT OBUFFALO VANCOUVER MILWAUKEE SIOUX CITY SALT LAKE CITY CHEYENNE LINCOLNEOMAHA CHICAGO CLEVELAND NEW YORK NEWARK SACRAMENTO ROCK SPRINGS NORTH GRAND DES MOINES TOLEDO ELKO RENO PLATTE ISLAND MOLINE AKRON OAKLAND DENVER ST. JOSEPH BURLINGTON PHILADELPHÍA COLUMBUS FRESNO KANSAS CITY BAKERSFIELD PITTSBURGH ID LOS ANGELES ST LOUIS CINCINNATI SAN DIEGO

Back:
Plec addr drop card slot provi Mail collected several dai Mailed from the Dome of the TRAVEL AND TRANSPORT BUILDING A CENTURY OF PROGRESS, CHICAGO The Boeing monoplanes of United Air Lines have ushered in a New Era in Travel. With two 550 h. p. super-charged Wasp engines, they have a high speed of more than three miles a minute. They carry 10 passengers, 2 pilots, stewardess and cargo and can climb, fully loaded, more than 1,000 feet per minute and to 10,000 feet in ten minutes. They can sustain flight on only one engine. 10-