What is huppelkind?

Some articles on huppelkind:

Wilhelm Otto Kühne
... The most notable of his books are the Huppelkind series and Die wonderbaarlike motor van Barnabas Bombas (1981) ... His wife, the illustrator Dorothy Hill, illustrated the entire Huppelkind series as well as other of his books and was an illustrator for Die Burger and Die Jongspan ... WO Kühne is especially known for his six Huppelkind books Huppelkind (1958), Huppel maak 'n plan (1958), Wip-Huppel-Wip (1959), Vrolike Huppelkind (1959), Huppel by die water (1960 ...