He was always searching for his identity and combined two worlds: the realistic one and the world of dreams. His paintings were exhibited in Paris, Oslo Norway and London. In Israel, his works were shown at Gallery Rosenfeld, Yad Vashem in Jerusalem, the Petach Tikvah Museum of Art, and Yad Layeled. On the tenth anniversary of his death, Kor's oil painting The Cellist was exhibited at the Yad LaYeled Children's Museum at the Ghetto Fighters' House, alongside the children's books he wrote and illustrated. Two of his monotypes dated 1995 are in the Israel Museum’s collection in Jerusalem. Children's books In 1974, Kor began focusing on painting and illustrating children's books. From the 1980s Kor was considered one of the most popular and most-loved children's authors in Israel. In 1986, he published, through the Keter Publishing House, the book The Fish that Didn't Want to be a Fish, which creates the effect of changing characters. Later on, he wrote and illustrated The Hawk's Story. His best known book, Caspion the Little Fish, published by Zmora Bitan, starred for the first time a small silver fish which became the character most identified with Paul Kor as a children's author. Kor tells it: “On the table in my studio there lay an open box of cigarettes and a ray of sunshine fell on the silver paper and sparkled inside it and in a fraction of a second the idea was born to write a book about a silver fish". Caspion, which won the Ben-Yitzhak illustration prize from the Youth Wing of the Israel Museum in Jerusalem, subsequently became a 3-book series (the other books in the series are Caspion in Danger and Caspion's Great Journey). In addition, Paul Kor published through "Zmora Bitan" the book The Magic Zoo, which was awarded the Nahum Guttman prize for illustration by the Tel Aviv Municipality. From then on, more children's books were published one after the other by "Kinneret Zmora Bitan", all of which enjoyed great success. Caspion was joined, among others, by Ben-Ben and the Fledgling, The Elephant who Wanted to be the Best, The Sultan who Wanted to Fly, The Boy who Loved the Moon, Flower, Flower, Don't Cry, Little Frog, Go to Sleep, The Most Beautiful Color in the World, The Little Climber and the Glowing Flower and other illustrated stories which enjoyed great popularity among both children and parents. A number