Tác giả: P. A. Mason

D. Atkinson & K.K.S. Bhat: Tree Root Systems and Their Mycorrhizas

P.A. Mason: Damsel Gauntlet

P.A. Mason: Psycho Mirror

P.A. Mason: Of Hair and No Hair

P.A. Mason: Gretchen’s (Mis)Adventures Boxed Set 1-3

P.A. Mason: Troll Hunter: Witch for Hire

P.A. Mason: Royal Froggy Problem

P.A. Mason: Halloween Date Night

P.A. Mason: Very Krampy Christmas

P.A. Mason: Gretchen’s (Mis)Adventures Boxed Set 4-6

P.A. Mason: Witches Teeth

P.A. Mason: Troll and the Minotauress

P.A. Mason: Gretchen’s (Mis)Adventures Boxed Set 10-12

P.A. Mason: Queen Mab’s Castle

P.A. Mason: Kingmaker’s Sword

P.A. Mason: Elvish Sweatshop

P.A. Mason: Head of the Horseman

P.A. Mason: Flytrap Fiasco

P.A. Mason: Gretchen’s (Mis)Adventures Boxed Set 7-9

P.A. Mason: Kangaroo Case

P.A. Mason: Unforeseen Demise

P.A. Mason: Framed & Gamed

P.A. Mason: Draft Beers & Drop Bears

P.A. Mason: Curse for Christmas

P.A. Mason: Jitterball