Wikimedia | Crain's Connecticut
Photo Credit URL: 
https://commons.wikimedia.org/wiki/File:B-17E_(000060515-F-1234S-018)_(superseded).jpg
Image: 
Photographer: 
U.S. Air Force photo
Photographer URL: 
https://commons.wikimedia.org/wiki/United_States_Air_Force
Attribution Type: 
Public Domain
Attribution Type URL: 
https://en.wikipedia.org/wiki/Public_domain