Scans from Dengeki Hobby Magazine. (Warning: large images, around 4MB each.)
2001 Sep (page 1, page 2): Berserk Führer concept art, how to build Berserk Führer BN-Custom
2001 Oct (page 1, page 2): Grounchar/Diloforce concept art, how to build Diewüste Drachen
2001 Nov (page 1, page 2): tyrannosaur-type family tree, how to build Dibison Test-Type
2001 Dec (page 1, page 2): unreleased large flying Zoids concept art, how to build custom Gunbluster
2002 Jan (page 1, page 2, page 3): König Wolf concept art + lore, how to build presidential Madthunder
2002 Feb (page 1, page 2, page 3): lion-type family tree + lore, how to build Dragoon Nest diorama
2002 Mar (page 1, page 2, page 3): unreleased Customize Parts concept art
2002 Apr (page 1, page 2, page 3): unreleased carrier Zoids concept art, how to build Storm Spiner
2002 May (page 1, page 2, page 3): Spinosaurus-type concept art + lore, how to build Mega Gojuras
2002 Jun (page 1, page 2, page 3): Megaleon/Glaive Quama/Dark Spiner concept art, small Zoids lore
2002 Jul (page 1, page 2, page 3): Matrix Blox concept art + lore, how to build Snipe Lizard
2002 Aug (page 1, page 2, page 3): Chimera Blox concept art + lore
2002 Sep (page 1, page 2, page 3): how to build Liger Zero B, Chimera Blox tactics lore
2002 Oct (page 1, page 2, page 3): how to build Living Dead Battalion, Gojulas Giga concept art + interview
2002 Nov (page 1, page 2, page 3): Zoids History File lore
2002 Dec (page 1, page 2, page 3): Gojulas Giga concept art + lore
2003 Jan (page 1, page 2, page 3): how to build custom Buster Eagle, unreleased small flying Zoids concept art + lore
2003 Feb (page 1, page 2, page 3): how to build Space Sinker, Lord Gale concept art + lore
2003 Mar (page 1, page 2, page 3): how to build Gorhecks local customs, Boldguard/Leostriker concept art + lore
2003 Apr (page 1): how to build custom Dimetrodon
2003 May (page 1, page 2, page 3): how to build Arosaurer D, unreleased X-Zoids concept art + lore
2003 Jun (page 1, page 2, page 3): aquatic Zoids concept art, Trident lore
2003 Jul (page 1, page 2): game catalogue, Cyberdrive info + concept art