The Winter 2016 edition of the Center for Land Use Interpretation's newsletter, "The Lay of the Land", has more information on the cards: https://clui.org/newsletter/winter-2016/los-alamos-rolodex

There's also a book: https://clui-shop.square.site/product/los-alamos-rolodex/292...

I saw the exhibit in person back when it was on display. If you're ever in LA you should try to stop in to the CLUI's Culver City location, they always have something interesting.