Complex sentence: Byng started as a painter but was best known for his use of plastic in sculpture in the 1960s and 70s and the Albany Institute of History and Art have six of his works in their collection.
Split into simpler sentences: Byng started as a painter was best known for his use of plastic in sculpture in the 1960s and 70s. The Albany Institute of History and Art have six of his works in their collection.