Grumbletroll ... Wants to Be First!aprilkind, Barbara van den Speulhof, Stephan Pricken · First published 2022Open the Tome
Grumbletroll Merry Christmasaprilkind, Barbara van den Speulhof, Stephan Pricken · First published 2022Open the Tome
Grumbletroll ... Isn't Grumbling Today!aprilkind, Barbara van den Speulhof, Stephan Pricken · First published 2021Open the Tome
