how canI find out the value or if any value of a newspaper clipping on Henry Armstrong?

Answer 1

Redd ~
Unless the article in hand is a limited addition, In my opinion it wouldn't be worth that much. We are talking about one of the Greatest fighters that ever laced up a glove though and I'm sure that there are collectors of this type of item out there. Post it on EBay with a price which you think is fair and see how many bites you get, you can sell it or hang onto it depending on how much interest is shown.
Good luck Redd, I hope everything works out for you.