From article in March 1942 Popular Science
Recognize O-46
The United States Douglas O-46 was an observation airplane used by the United States Army Air Corps.
At least 11 O-46s saw overseas duty; two were destroyed in the Japanese raid on Clark Field in the Philippines on 8 December 1941. The Maryland Air National Guard operated O-46A's off the coast of New Jersey for anti-submarine duty. [2] The remainder were declared obsolete in late 1942 and after that were used primarily in training and utility roles.
From article in March 1942 Popular Science
Today, Douglas plants cover 3,338,100 Square feet of floor space, by next June will reach 5,000,000. This is a scene in one of the mammoth factories that are turning out a steady stream of planes night and day.
... The Cloudster, as it took shape in a Los Angeles warehouse Streamlined and equipped with instruments
"Combining steam power with an automatic control system, a new method of propelling, trucks and buses as been developed.