https://www.sageadvice.eu/the-1e-dmg-appendix-n-is-an-incredible-resource-for-seeing-what-books-inspired-gygax-when-making-dd-what-would-an-appendix-n-for-ed-greenwoods-forgotten-realms-look-like/
The 1e DMG Appendix N is an incredible resource for seeing what books inspired Gygax when making D&D. What would an Appendix N for Ed Greenwood's Forgotten Realms look like?