Mark McNabb
Books
Girl Genius Omnibus Volume 1: Agatha Awakens
2002
ISBN 9781890856502
Agatha Heterodyne and the Beetleburg Clank
2002
ISBN 9780613924962
Dell Road
2007
ISBN 9780595702701
Agatha Heterodyne and the Monster Engine
ISBN 9781890856328- No cover
What If? (1989-1998) #114