Complex sentence: In 1959, the Society held its first annual exhibition, juried by Bob Peak, Bradbury Thompson, and Stevan Dohanos, among others; which opened with three hundred and fifty original works of art and the first Illustrators Annual book.
Split into simpler sentences: In 1959, the Society held its first Annual Exhibition, juried by Bob Peak, Bradbury Thompson, and Stevan Dohanos, among others. It opened with three hundred and fifty original works of art and led to the publication of the first Illustrators Annual book.