They can be found at a couple of sites. One link below has puzzles from the show by date. The second link requires you to go to the last page and search for the Sony reward points items.
(see also related question)
Chat with our AI personalities
Depends on the date
Up for Grabs is the Wheel of Fortune Bonus Puzzle for Monday, November 7 2011
see related question
Go to the Wheel of Fortune site
Wheel of fortune does not provide contestant information