Mystery History -- Special Edition #3

Photo #3: Where are we? And what's happening?

For this special edition of Mystery History, guesses on this blog are disqualified for the first time ever because this contest is strictly low-tech.

Come to my Mystery History exhibition at the Pasadena Museum of History and scroll through the 14 topics that feature photos, artifacts and back stories. 

At the end of the exhibition there is a wall with three photos and  corresponding color-coded sheets you can fill out with your best guesses for each of the three photos, then place them in the suggestion box.  

Good luck!

I'll take the people who win for each photo out to lunch, my treat!

I'll reveal the back story to the photo above on my blog Thursday, March 19.