He and Don Shanosky developed the pictogram symbols widely used to identify airports, restrooms and more. He was also an artist known for his sculptural assemblages.He and Don Shanosky developed the pictogram symbols widely used to identify airports, restrooms and more. He was also an artist known for his sculptural assemblages.Read MoreCook, Rajie (1930-2021), Deaths (Obituaries), Art, Signs and Signage, Symbols, COOK & SHANOSKY, Palestinians