While looking for old images of the Frisco depot for Tuttle Oklahoma, I came across this Flickr account/album: https://www.flickr.com/photos/partridgeroad/albums/72157623735474363 Not all depots in the gallery are Frisco, but several are and the photo's are quite excellent. I made contact with the owner and he was gracious enough to send me a 3mb high-res image of the depot I was interested in. Thought I would share! Enjoy!
Thanks for the link. This reminds me of another website with photos of depots in Missouri. http://www.missouridepots.com/ It belongs to Jack Forbes and they are sorted by town, county or railroad. I haven't looked at it in a while, but it looks like he's still updating it; the last addition was in October. The photos are from the 1800s to the 2000s.