Sonic the Hedgehog Yearbook 1991 (1992) - Sonic the Hedgehog

published by Grandreams Ltd. in the UK, predating the Sonic the Comic series published by Fleetway.This issue is commonly known as Sonic the Hedgehog Yearbook 1991 due to the copyright date, but was actually published in 1992.

UK:RESISTANCE: ALL OF THE PAGES OF THE SONIC THE HEDGEHOG YEARBOOK

The Supreme Topic of 'Other' Knowledge., Page 313

The Official Sonic the Hedgehog Yearbook (1993) - Sonic Retro

Robotnik-Mun on Tumblr

Sonic the Hedgehog (promotional comic), Sonic Wiki Zone

Sonic the Hedgehog Book Sonic News Network+BreezeWiki

1994 OFFICIAL SONIC The Hedgehog Special Book Comic Annual Game Grandreams Sega £11.99 - PicClick UK

The Official Sonic the Hedgehog Yearbooks, Sonic the Comic Wiki

Sonic the Hedgehog - Retromags Community