The article below was published in the daily newspaper The Bismarck Tribune, Bismarck, North Dakota, USA, page 1, on August 14, 1947.
See the case file.
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Herman Lerdahl captain of the Northwest Airlines plane which passed through Bismarck at 6:50 p.m., Wednesday, said he saw a "flying disc or other unidentified object" over Billings, Mont., at 3 p.m., Wednesday.
Lerdahl, with Northwest Captains Walker and Engebretsen, were watching a skywriter, working at an elevation of about 10,000 feet when one noticed "an object" apparently beyond the sky-writing. The best identification they could give it was "an object in the sky."
It moved slowly toward the west as they watched. A call to the Billings weather bureau brought the information that the last weather balloon released by it had disappeared to the eastward.
"I don't know what it was," said Lerdahl, "but I do know it was something. All of us saw it."