4.Northwest AirlinesFollowing the Air Mail Act of 1934 Northwest Airways changed their name to Northwest Airlines. Their main aircraft was the Lockheed 10 Electra and their earliest postcards show that aircraft. In 1937 they added the Lockheed 14 "Sky Zephyr" to their fleet, and in 1939 they added the DC-3. Some of their early Lithographic postcards came in black and white and several tints. Most are scarce to rare. Starting with the DC-3 their cards are more common and they produced some nice linen postcards as well. Their Chrome era postcards are common but are visually striking with their signature red tails.
