Pokemon Red and Blue - All HM Locations
Pokemon Red/Blue Any% Glitchless - Nidoran Route - Speedrun Guides
Red/Blue/Yellow HM chart and Pokémon compatibility
Adventure Red - TM & HM Location, PDF
How to Get HM Cut in Pokémon Red: 6 Easy Steps
Pokemon Emerald - Beat Blend Master
Here's a map of the Safari Zone, with a path to HM03. (cropped from some long post from the Blue stream) : r/twitchplayspokemon
Pokemon Blue Version Cerulean Cave Map Map for Game Boy by StarFighters76 - GameFAQs
Pokémon Omega Ruby and Alpha Sapphire: TM and HM Location Guide
20 Pokemon: Red & Blue Urban Legends Revealed