8 books
307 pages|Published 1981
138 pages|Published 1982
In tiefsten Tiefen
64 pages|Published 1983
In höchsten Höhen
64 pages|Published 1985
In weiter Ferne
64 pages|Published 1988
Published 1988
John Difool, Class "R" Detective
152 pages|Published 1990
350 pages|Published 2001