Wikimedia | Crain's Connecticut
Photo Credit URL: 
https://commons.wikimedia.org/wiki/File:Oil_well_pump_jack,_NE_Colo_(7632673158).jpg
Image: 
Photographer: 
Greg Goebel
Photographer URL: 
https://www.flickr.com/people/37467370@N08
Attribution Type: 
Creative Commons Attribution 2.0 Generic
Attribution Type URL: 
https://creativecommons.org/licenses/by/2.0/legalcode