Pokémon Gold and Silver/Route 30-31 — StrategyWiki, the video game walkthrough and strategy guide wiki
Pokemon HeartGold and SoulSilver - Headbutt Guide
Pokémon Gold and Silver/Route 36-37 — StrategyWiki, the video game walkthrough and strategy guide wiki
Pokémon HeartGold and SoulSilver/Route 31 — StrategyWiki, the video game walkthrough and strategy guide wiki
Pokémon Gold and Silver/Route 44 — StrategyWiki, the video game walkthrough and strategy guide wiki
Pokéarth - Johto - Route 33
Johto Route 38 - Bulbapedia, the community-driven Pokémon encyclopedia
Route 44 (Johto) – PokéWiki
For HG/SS Nuzlockers. Use this patch of grass up the waterfall on route 47 for pre E4 training instead of Victory Road (Non randomized). Lv35 Miltanks here give 1000 xp plus dittos
How to Get Waterfall in Pokémon Gold: 7 Steps (with Pictures)
Route 44 - Pokemon Gold, Silver and Crystal Wiki Guide - IGN
Pokemon Gold Version Route 44 Map Map for Game Boy Color by KeyBlade999 - GameFAQs
Pokemon Gold and Silver :: Full Walkthrough
Johto Route 35 - Bulbapedia, the community-driven Pokémon encyclopedia