I asked several of the employees and volunteers there, but surprisingly, no one was exactly sure the name of this exhibit. After a quick internet search upon returning home, did I find out that it is called American Flag of Faces.
Where do these photos come from? If you donate $50 to the Statue of Liberty-Ellis Island Foundation, you can include a picture of yourself, your family, or your ancestors on the American Flag of Faces photo gallery. I believe donated photos are selected from this pool and displayed on this exhibit.
P.S. To readers curious about the baby hummingbirds, they are still healthy and growing. I thought I would take a break from that subject and return to it in a few days. No worries, I am still monitoring their progress daily.