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Christiaan Karel Appel was a Dutch painter, sculptor, and poet. He started painting at the age of fourteen and studied at the Rijksakademie in Amsterdam in the 1940s. He was one of the founders of the avant-garde movement CoBrA in 1948. He was also an avid sculptor and has had works featured in MoMA and other museums worldwide.
Johann Wilhelm Preyer was a German painter of the second half of the 19th century. He is known as a painter, a representative of the Düsseldorf school of painting.
Preyer specialized in still lifes with flowers and fruit, which were notable for their detailed and meticulous elaboration. He is considered the preeminent painter of this genre of his era. His work is common in the United States, but there are also important pieces in the Berlin National Gallery and other German museums.
Preyer was one of the first representatives of the Düsseldorf School and was instrumental in founding the Düsseldorf Artists' Association.
