I have 2 pictures I will call them for now of work by Chinese American Artist David Lee from 1978/79. I believe these pieces are on silk. I know he did his original water colors on silk but also his lithographs were on silk. There were some copies he did on canvas and cheap prints on paper. I have removed one from its frame and tried to explore it under magnification with good light and I'm just not sure. If you have expertise or insight into this area it would be greatly appreciated. Thank you