Not really
one photo, but finding a copy of "Tweetsie Country" by Mal Ferrel in a small satellite library along Stoney Creek TN when I was a little kid really blew my mind. I knew about the ET&WNC as a very little kid as we went through the area for family trips each year for my childhood. I knew there'd been a 3-foot line through there and had ridden behind #12 at Blowing Rock when I was very little (it's perhaps my earliest childhood memory).
But the photos in that book just blew me away. I saw shots of Elk Park, knowing I'd bene over the right of way in cars countless times. It totally captured my imagination.
When I was about 12 or 13, I think, I saw a copy for sale noted in an ad in Trains and I begged my parents to buy me a copy. I still have it today, in the same condition it was when I first got it as I treated it like it was made of gold at the time.
I have all the other ET&WNC books now, and they're mostly much better than the older book due to new info and photographs Mal didn't have back then, but I still treasure that book and look at it every now and then.
-Lee
Flickr photo set of my On30 layout