File:Ernest K. Warburton with his 575HP pursuit plane at East Boston Airport.jpg

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File information
Description	Ernest K. Warburton with his 575 horsepower Boeing P-12 pursuit plane at East Boston Airport in September 1930.
Source	https://www.flickr.com/photos/boston_public_library/5861463906/in/photostream/
Date	c. 1930
Author	Jones, Leslie, 1886-1967 (photographer)
Permission (Reusing this file)	See below.
Additional information	==Notes== File name: 08_06_001470 Title: Ernest K. Warburton with his 575HP pursuit plane at East Boston Airport Creator/Contributor: Jones, Leslie, 1886-1967 (photographer) Date created: 1930-09 Physical description: 1 negative : glass, black & white ; 4 x 5 in. Genre: Glass negatives Subjects: Warburton, Ernest K. ; Air pilots; Airplanes Notes: Title and date from information provided by Leslie Jones or the Boston Public Library on the negative or negative sleeve. Collection: Leslie Jones Collection Location: Boston Public Library, Print Department Rights: Copyright © Leslie Jones.; PD not renewed Preferred citation: Courtesy of the Boston Public Library, Leslie Jones Collection.

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This image is in the public domain because under the Copyright law of the United States, originality of expression is necessary for copyright protection, and a mere photograph of an out-of-copyright two-dimensional work may not be protected under American copyright law. The official position of the Wikimedia Foundation is that all reproductions of public domain works should be considered to be in the public domain regardless of their country of origin (even in countries where mere labor is enough to make a reproduction eligible for protection).

This work is in the public domain in the United States because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. Unless its author has been dead for the required period, it is copyrighted in the countries or areas that do not apply the rule of the shorter term for US works, such as Canada (50 pma), Mainland China (50 pma, not Hong Kong or Macao), Germany (70 pma), Mexico (100 pma), Switzerland (70 pma), and other countries with individual treaties. See Commons:Hirtle chart for further explanation.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	19:23, 16 October 2012		1,500 × 1,168 (227 KB)	Richard Arthur Norton (1958- ) (talk \| contribs)	Ernest K. Warburton with his 575HP pursuit plane at East Boston Airport in September 1930. {{cc-by-2.0}} File name: 08_06_001470 Title: Ernest K. Warburton with his 575HP pursuit plane at East Boston Airport Creator/Contributor: Jones...

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Camera manufacturer	Sinar AG
Camera model	Sinarback 54 FW, Sinar m
Author	Boston Public Library
Width	4,880 px
Height	3,797 px
Compression scheme	Uncompressed
Pixel composition	Black and white (Black is 0)
Orientation	Normal
Number of components	1
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Software used	Adobe Photoshop CS3 Macintosh
File change date and time	09:32, 7 August 2008
Color space	Uncalibrated
Image width	1,500 px
Image height	1,168 px
Bits per component	8
Date and time of digitizing	05:32, 7 August 2008
Date metadata was last modified	05:32, 7 August 2008