Link: https://dynalist.io/d/GcSvL_R4bB97MLi4SAwhYrgY
Propædia was basically a logical framework of all human knowledge which also serves as the contents of the 15th edition of Encyclopædia Britannica, one of the greatest encyclopedia before Wikipedia’s time.
Read more about this simply amazing outline: https://en.wikipedia.org/wiki/Propædia
Credit for data source: https://sites.google.com/site/britexplorer/home/propaedia