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Original art works
Images of original art works used throughout this web site are copyright by the individual artists and are used with their permission.

Derivative works
The globe diagram is a derivative of "great-circle distance.svg" by CheChe, used under Creative Commons Attribution-Share Alike 4.0 International license. The globe diagram is licensed under Creative Commons Attribution-Share Alike 4.0 International license by Marcus Brownlow.

Typeface
Banner and logo art work on this site uses the Ray Johnson font from K-Type. "Ray Johnson is a small caps font based on the handwritten block lettering used by Ray to add the names of his correspondents to their bunny head portraits."

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