Mirko Hanák (June 26, 1921 - November 4, 1971) was a Czech painter, graphic designer and illustrator, who was famous for his particularly distinctive illustrations and lithographs with natural themes. He died relatively young of leukemia. His fine illustrations portray a loose style, belying the amazing technical expertise of a great draftsman. Apparently using watercolor on rice paper, coming in with exquisite detail with finer brushes.
• Ondrej Kovacik's flickr page of Hanák's Bambi illustrations
• More images on Matou en Peluche
• Some scans on a Japanese site