Restoring "Pillbox" ball hats

[guitarman]

I have 3 "pillbox" ball caps that the Pittsburgh Pirates wore during their 1979 World Series year.The top of the hats, where the stripes go around it, have kinda got crushed,during our last move. Is there any way to stiffen the tops so they look good enough to wear again? Thanks for reading my post !!

 

[jwalls]

Try use cheap clear spray on the inside of your caps, but don't get it on the sweatbands.