 "Copying a four-foot -long document with delicate lettering out to the edges would be quite difficult, especially in 1842" (Schaaf).He goes on to state that he thinks Collen merits a great deal more study than he had been given to that date.Since Larry Schaaf wrote his 1982 article about the Treaty of Nanking, R. Derek Wood has written another article titled "Photocopying the Treaty of Nanking in January 1843."