Sonic's Schoolhouse : Sega : Free Download, Borrow, and Streaming : Internet Archive

Sonic's Schoolhouse (English) [Windows] : Orion Interactive, BAP Interactive : Free Download, Borrow, and Streaming : Internet Archive

Uncommon/Rare Sonic Art : Free Download, Borrow, and Streaming : Internet Archive

Sonic The Hedgehog Classic : SEGA : Free Download, Borrow, and Streaming : Internet Archive

History of video games/Print version/Second Generation of Video Game Consoles - Wikibooks, open books for an open world

Sonic the Hedgehog, an Unofficial Roleplaying Game : Ross Wilkin : Free Download, Borrow, and Streaming : Internet Archive

Sonic the Hedgehog (I-Mode, J2ME) - The Cutting Room Floor

Sonic the Hedgehog 3 (Genesis) : SEGA : Free Download, Borrow, and Streaming : Internet Archive

Sonic's Schoolhouse Download (1997 Educational Game)

Sonic's Schoolhouse, Sonic Wiki Zone