Pokemon Tower - Pokemon Fire Red and Leaf Green Guide - IGN

Time for some ghost-busting. If you've found the Silph Scope in Team Rocket's Hideout, you can now safely enter the Pokémon Tower in Lavender

Pokemon FireRed & LeafGreen OST - Pokémon Tower

Team Rocket's Hideout - Pokemon Fire Red and Leaf Green Guide - IGN

Pokemon FireRed and LeafGreen :: Full Walkthrough

Pokemon FireRed Version [Walkthroughs] - IGN

Pokémon FireRed and LeafGreen — StrategyWiki

Celadon City - Gym Leader Erika - Team Rocket Hideout - Pokemon: Let's Go, Pikachu! Guide - IGN

Lavender Town - Pokemon: Let's Go, Pikachu! Guide - IGN

Seafoam Islands - Pokemon Fire Red and Leaf Green Guide - IGN

Pokémon Battle e FireRed & LeafGreen - Bulbapedia, the community-driven Pokémon encyclopedia

Pokémon FireRed & LeafGreen - Trainer Tower

Lavender Town - Pokemon: Let's Go, Pikachu! Guide - IGN

Pokémon Emerald - Wikipedia

Pokemon Fire Red and Leaf Green Guide - IGN