Gren continued to produce cartoons for the Echo evening paper from home.
He was also often commissioned to produce cartoons for advertising purposes.
For over 30 years, the company has been producing cartoons for children's television.
He has produced record-album covers, political cartoons, controversial articles, and a variety of other media.
Netzeitung.de, a German Internet-only newspaper, produces several animated political cartoons every week.
Abu immersed himself in British culture and produced incisive political cartoons.
The new animation studio lasted only two years and produced few cartoons of note before shutting down in 1969.
He continued to produce weekly cartoons for The Times until 1980.
These techniques used to produce cartoons on a reduced budget included:
Hanna-Barbera was one of the first animation studios to successfully produce cartoons especially for television.