The value of any trading card is pretty much determined by what they sell for on eBay. The answer to the question depends entirely on which of the great many cards featuring Wayne Gretzky or Darryl Strawbridge you have and the condition the cards are in. Single Wayne Gretzky cards can be worth anything from a few cents/dollars (probably) to tens of thousands of dollars.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.