Thanks to Fballguy for making this rare Astros pennant available to me.
I was also inspired by Greg to try using google photos to organize pics of my collection. Here is what I was able to do for Houston baseball (hope the link works). I'll try to get to other stuff (e.g., SF Giants) soon.
https://photos.app.goo.gl/YVosseANFrmHdHPh9