It is useless for my opinion to collect all advertisements – mail order, etc. so I put some here, for obvious reasons (i.e., to have everything that has to do with the Gotrek & Felix).
SkavenSlayer book is included in numerous other (printed and digital) omnibus, collections, bundles, etc. For more details check SkavenSlayer tag.
Cover is NOT Gotrek & Felix so the artist is not mentioned.
