Licenses for Rick Johnson's images.

License for inferno_brick3_bandw.png: Public Domain

License for inferno_bwmaze.png: Public Domain

License for inferno_bwmazeblue.png: Public Domain

License for inferno_bwmazered.png: Public Domain

License for inferno_bwmazepurple.png: Public Domain

License for inferno_bwmazegreen.png: Public Domain

License for inferno_fire.png: Public Domain

License for inferno_bwmazebluel.png: Public Domain

License for inferno_bwmazeredl.png: Public Domain

License for inferno_bwmazepurplel.png: Public Domain

License for inferno_bwmazegreenl.png: Public Domain