Biography of Roland Kohlsaat (1913–1978)
- born in Hamburg in 1913
- attended arts and crafts school in Hamburg
- trained as lithographer, painter and sculptor
- drew illustrations for newspaper and magazines after the war
- 1953, Julio und Jimmy first published in children’s supplement of Stern
- Julio und Jimmy (later Jimmy das Gummipferd) appeared weekly until 1976
- died in 1978
