Pokémon Journeys, Vol. 3 - By Machito Gomi (paperback) : Target
Comparing Ash and Red : r/pokemon
Red (Origins) - Bulbapedia, the community-driven Pokémon encyclopedia
Red vs. Ash : r/pokemon
Ash vs Red! Pokémon Amino
Ash Ketchum Finally Becomes Pokémon World Champion in the Anime
How to watch Pokémon in order: All the TV series, movies and specials