Information for Pokémon HeartGold and Pokémon SoulSilver versions, released in 2010, including gym leader and Elite 4 Pokémon.
Pokémon Adventures: HeartGold and SoulSilver, Vol. 2, Book by Hidenori Kusaka, Satoshi Yamamoto, Official Publisher Page
Almost all of the HeartGold/SoulSilver -era artwork featuring a pokemon that evolves with the help of an item has that item featured in the artwork! : r/PokemonTCG
Pokémon HeartGold and SoulSilver Versions
What Starter Should I Choose For Pokemon Heart Gold/Soul Silver?, by Buy Pokemon Games
Pokémon HeartGold/SoulSilver, Mudae Wiki
Pokemon HeartGold (Game Only) - Nintendo DS, Nintendo DS
Pokemon Heartgold/soulsilver Custom Ios Theme Pack Retro Game Theme Custom App Icons & Wallpapers Ios14 Ios16
Pokemon HeartGold and SoulSilver :: Full Walkthrough
Pokémon HeartGold and SoulSilver Concept Art & Characters
The Perfect Remake HeartGold and SoulSilver