This is where I'm saving pages I might work on.
Math
- Method of distinguished element
- Combinatorial principles
- Examples of generating functions
- Generating Function
- Dvonn
- Harmonograph
Numismatics
- Ornamental turning
- Geometric lathe
- Rose engine lathe
- Spanish real
- Mexican real
- Columnarios
- Spanish Dollar
- Countermark
- James Earle Fraser (sculptor)
- Dos Pesos gold coin
- Charles Pillet
Other