This resource provides card sets for each WH category (what, who, where, when & why). I found that some of my clients needed to target each WH question separately so...
There is a separate card set for each category:
48 cards for what
48 cards for who
48 cards for where
48 cards for when
48 cards for why
+6 special location cards to play the game
Play them separately OR mix them up!