Disk_MHD_generator: By Ray Van De Walker at English Wikipedia, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=20906887

Hall_MHD_generator.png: By Julien Geffray (Tokamac at French Wikipedia) - Own work, CC BY-SA 2.5, https://commons.wikimedia.org/w/index.php?curid=20573405

Molten Salt Reactor: By US Department of Energy Nuclear Energy Research Advisory Committee - http://www.ne.doe.gov/genIV/documents/gen_iv_roadmap.pdfVector source for File:Msr.gif., Public Domain, https://commons.wikimedia.org/w/index.php?curid=8318707

GPHS-RTG: By original JPG version: NASArecreated PNG version without compression artifacts in text labels: Nyq - original JPG version: http://solarsystem.nasa.gov/rps/rtg.cfm JPGrecreated PNG version without compression artifacts in text labels: Own work, Public Domain, https://commons.wikimedia.org/w/index.php?curid=92611829

ThermalFissionYield.png: By JWB at en.wikipedia, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=16479803

DecayChainThorium.png: By http://commons.wikimedia.org/wiki/User:BatesIsBack - http://commons.wikimedia.org/wiki/File:Decay_Chain_of_Thorium.svg, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=16983885

Isotopes_and_half-life.svg: By BenRG - Own work, Public Domain, https://commons.wikimedia.org/w/index.php?curid=7900237

GenIVRoadmap-en.png: Creative Commons 

LMFBR.png:  Graevemoore, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons

VHTR.png:  By US Department of Energy Nuclear Energy Research Advisory Committee - http://www.ne.doe.gov/genIV/documents/gen_iv_roadmap.pdf, Public Domain, https://commons.wikimedia.org/w/index.php?curid=8318791

SCWR.png:  By US Department of Energy Nuclear Energy Research Advisory Committee - https://web.archive.org/web/20130120130033/http://www.ne.doe.gov/genIV/documents/gen_iv_roadmap.pdf or http://www4vip.inl.gov/research/supercritical-water-cooled-reactor/d/supercritical-water-cooled-reactor.pdf, Public Domain, https://commons.wikimedia.org/w/index.php?curid=8318872

GFR.png:  By Gfr.gifderivative work: Beao - Gfr.gif, Public Domain, https://commons.wikimedia.org/w/index.php?curid=8030370

SFR.png:  By Sfr.gifderivative work: Beao - Sfr.gif, Public Domain, https://commons.wikimedia.org/w/index.php?curid=8120627

IFR_concept.jpg:  By Argonne National Laboratory-West - www.anlw.anl.gov/anlw_history/images/image_large/ebr_ii_schem.html, Public Domain, https://commons.wikimedia.org/w/index.php?curid=9766650

LCFR.png:  By Idaho National Libraryderivative work: Beao - Lfr.gif and before that [1]., Public Domain, https://commons.wikimedia.org/w/index.php?curid=8039779