John Vernon Lord is another great character in the British illustration history. Born in 1939 and still producing amazing work. Here's a link for a very good biography http://www.illustrationcupboard.com/artist_bio.aspx?aId=283&aiPage=5
The stories of Jaboti in the Amazon jungle are a witty and unpredictable - a good example of 1960's children's literature. It's great fun for adults as well because the animals are full of human qualities such as selfishness, self-delusion and other mischiefs.