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Vermilion Gym - Bulbapedia, the community-driven Pokémon encyclopedia
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Gym Leader Theme: Pokemon Red & Blue Sheet music for Trombone tenor, Trombone bass (Mixed Quartet) | Download and print in PDF or MIDI free sheet music | Musescore.com
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Silph™ on Twitter: "According to the official Pokémon Red and Blue manual, Sabrina's Gym appears to be the 5th gym, canonically speaking. However, this is directly contradicted by the game badge screen