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File:Douglas B-23 Dragon 3-view line drawing.png

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Original file (2,728 × 1,576 pixels, file size: 312 KB, MIME type: image/png)

Summary

Description
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
Permission
(Reusing this file)
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:
Public domain
This image is a work of a U.S. military or Department of Defense employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain in the United States.

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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.

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15 October 1940

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File history

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Date/TimeThumbnailDimensionsUserComment
current22:58, 8 September 2024Thumbnail for version as of 22:58, 8 September 20242,728 × 1,576 (312 KB)Noha307Remove background and imperfections
20:51, 8 September 2024Thumbnail for version as of 20:51, 8 September 20242,728 × 1,576 (2.24 MB)Noha307Grayscale
20:50, 8 September 2024Thumbnail for version as of 20:50, 8 September 20242,728 × 1,576 (6.85 MB)Noha307Uploaded 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

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