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Uncle Sam seeking way to improve theaters for talkies. How to improve ...
Public domain photograph of cabinet, bureau, office, 1920s - 1930s America, free to use, no copyright restrictions image - Picryl description
![Scientists for Uncle Sam awarded Magellan Gold Medal. Dr. L.J. Briggs, left, Assistant Director and Dr. Paul R. [Heyl?], Chief of the Sound Section of the United States Bureau of Standards, with the first successful experimental model of the earth inductor compass, which they developed for the Army Air Corps and for which they were awarded the Magellan Gold Medal by the American Philosophical Society. It was a model of this same compass that Capt. Charles Lindbergh used on his epochal flight from New York to Paris](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MjcvMDEvMDEvc2NpZW50aXN0cy1mb3ItdW5jbGUtc2FtLWF3YXJkZWQtbWFnZWxsYW4tZ29sZC1tZWRhbC1kci1sai1icmlnZ3MtbGVmdC1hc3Npc3RhbnQtMTAyNC5qcGc%3D/40/30/webp "Scientists for Uncle Sam awarded Magellan Gold Medal. Dr. L.J. Briggs, left, Assistant Director and Dr. Paul R. [Heyl?], Chief of the Sound Section of the United States Bureau of Standards, with the first successful experimental model of the earth inductor compass, which they developed for the Army Air Corps and for which they were awarded the Magellan Gold Medal by the American Philosophical Society. It was a model of this same compass that Capt. Charles Lindbergh used on his epochal flight from New York to Paris")
Scientists for Uncle Sam awarded Magellan Gold Medal. Dr. L.J. Briggs,...
Picryl description: Public domain image of a portrait of a scientist, free to use, no copyright restrictions.
Uncle Sam seeking way to improve theaters for talkies. How to improve ...
A black and white photo of a man in a room, Library of Congress Harris and Ewing collection Title from unverified caption data on negative or negative sleeve. On sleeve: Watch Your Credit Line. Date based on d... More