Original postcard caption:
"Going places. Propelled by 15,000 hp,
harnessed in four sleek nacelles, a Western Air Lines Electra jet
sails through the skies at more than 400 mph (644 kmh) in quite effortless
flight. With performance capabilities uniquiely suited to airline
networks, the Electra jet operates from runways as short as 4,700 ft (1,433 m)
and is custom-tailored for high-frequency routes from 150 to
2,500 miles (241 to 4,023 km)."