Trollpak
"Trollpak , Troll Facts , Secrets , and Adventures" is a boxed fantasy tabletop role-playing supplement , written by Greg Stafford , and Sandy Petersen , with art by Lisa A . Free , and published by Chaosium in 1982 . 
<triplet> Greg Stafford <subj> Chaosium <obj> employer <triplet> Sandy Petersen <subj> Chaosium <obj> employer <triplet> Chaosium <subj> tabletop role-playing supplement <obj> product or material produced