DescriptionDouglas B-23 Dragon 3-view line drawing.png
English: A 3-view line drawing of the Douglas B-23 Dragon. Source of scan was photocopy of original document. Photocopy was reduced in size from original two page fold-out.
Date
Source
Preliminary Handbook of Service Instructions for the Model B-23 Bombardment Airplane, T.O. No. 01-40EC-2 (Datyon, Ohio: Materiel Division, Field Service Section, Wright Field, 1940), 19. Provided by the National Museum of the United States Air Force, Dayton, Ohio.
Author
Materiel Division, Field Service Section, Wright Field
Notes on title page read: "Contractors unedited instructions issued in accordance with Paragraph 6, T. O. No. 00-5" and "[p]ublished by authority of the Chief of the Air Corps".
Licensing
This image is in the public domain because it is a mere mechanical scan or photocopy of a public domain original, or – from the available evidence – is so similar to such a scan or photocopy that no copyright protection can be expected to arise. The original itself is in the public domain for the following reason:
This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as when the enhancements are clear but insufficient. For known raw unenhanced scans you can use an appropriate {{PD-old}} tag instead. For usage, see Commons:When to use the PD-scan tag.
Note: This tag applies to scans and photocopies only. For photographs of public domain originals taken from afar, {{PD-Art}} may be applicable. See Commons:When to use the PD-Art tag.
Captions
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Uploaded a work by Materiel Division, Field Service Section, Wright Field from ''Preliminary Handbook of Service Instructions for the Model B-23 Bombardment Airplane'', T.O. No. 01-40EC-2 (Datyon, Ohio: Materiel Division, Field Service Section, Wright Field, 1940), 19. Provided by the National Museum of the United States Air Force, Dayton, Ohio. with UploadWizard