There is a rare book on Pak Mei that is about 400 pages out i managed to win a copy but it cost me about a hundred dollars the book is in Chinese . Here is a link to the book just scroll down and you can see it . If you look around on Ebay you might find other copys of it to bid on .
http://cgi.ebay.com/Pak-Mei-Kung-Fu-...QQcmdZViewItem