A Pokémon Retrospective: Generation 7 - 2016 To 2019 - Feature - Nintendo Life
First Generation Pokémon Kids Toys to Receive Re-Release in December | MOSHI MOSHI NIPPON | もしもしにっぽん
A chart of the generations (x-post from 4chan) : r/pokemon
How to Trade Pokemon Between Every Generation - IGN
Noticed an interesting pattern, odd generations mostly introduce new Pokemon, while even gens expand on pre-existing Pokemon. Looks like X and Y are following the trend. : r/pokemon
Pokémon Generations - Bulbapedia, the community-driven Pokémon encyclopedia