We get a lot of photos posted on the Arizona Highways Facebook page. Recently, a post by Kelly Clark Ludlum stood out.

"I recently had mystery negatives developed that were found behind some furniture at my dad's house," she wrote. "Nearly threw them out. I would like Arizona HIghways to have this picture, and know that it came from my family. The picture [above] was taken by William Stanley Clark, 1927. I have others."

We contacted Kelly to see if she'd be willing to share some more of those photos. She graciously agreed, and now we present a selection of them to you, our readers. Kelly also provided some information on some of the photos; it's included in the captions below.

Thanks, Kelly, for sharing these photos with us. They're a fascinating look at the Arizona of yesteryear. (All photos courtesy of Kelly Clark Ludlum.)