DOE (U.S. Department of Energy)/NREL (National Renewable Energy Laboratory) and its photographers David Parsons, Warren Gretz, Roger Taylor, and Joel Renner.

BLM (Bureau of Land Management) and its photographers Nick Seifert, Richard H. Brown, and Merv Coleman, and its collaborators BLM/MSO, BLM/Nome Field Station, and BLM/Winnemucca Field Office.

U.S. Navy/Naval Historical Center Photograph.

NSF (National Science Foundation) and its collaborators Josh Landis; Eugene Domack, Hamilton College.