I bought this (somewhat) old (circa 1983) book yesterday and it comes with very lovely illustration which were credited to Kwan Shan Mei.(Updated Nov 2012: I was informed later that Mdm Kwan herself has said that it was not her work. See comments for this blog).
That started me on a search to know about this illustrator but I was not able to find much on the net except that the Mooty series of books were also by her.
I think it would be great to honour the local illustrators who has been part of our collective visual memory through textbooks, readers and storybooks. So, if you know anything about Shan Mei, please drop me a note.
I also found the following illustration by Shan Mei on flickr.