Manfred Kostka
Cover/Jacket Design by 2
| Was Ist Was, Band 87: Türme | Hardback | |
| Was Ist Was, Band 91: Brücken | Hardback |
Illustrator 2
| Was Ist Was, Band 71: Seeräuber | Hardback | |
| Was Ist Was, Band 83: Höhlen | Hardback |
Added by magerharz
| Was Ist Was, Band 87: Türme | Hardback | |
| Was Ist Was, Band 91: Brücken | Hardback |
| Was Ist Was, Band 71: Seeräuber | Hardback | |
| Was Ist Was, Band 83: Höhlen | Hardback |