Althea je autorkou približne 200 kníh, z ktorých niektoré sama ilustrovala. Jej literárna tvorba sa začala v roku 1968, keď s manželom ručne tlačila a viazala svoje prvotiny. Tieto rané práce, ktoré si sami distribuovali, zahŕňali príbehy ako „Desmond the Dinosaur“, inšpirovaný smutným dreveným dinosaurom, a „Cuthbert and Bimbo“, rozprávanie o žirafe a mravcovi. Jej štýl sa vyznačuje hravosťou a vizuálnou estetikou, pričom sa často zameriava na postavy zvierat a jedinečné farebné papiere.
This title talks about the difference between envy and jealousy, examines why we feel envious of others and suggests way in which children can learn to cope with these feelings. It includes notes for parents and teachers.
In this title children talk about what makes them feel sad, how they cope with it and how to help someone who is feeling the same way. It includes notes for parents and teachers.
Children talk about different things that can frighten you, the ways people show they are scared and how to learn to cope with feeling frightened. It includes notes for parents and teachers.