Outside the stadium, there are no signs of identification. A Hyde Park Beer advertisement on an exterior wall is the most obvious feature, along with the tattered ticket office at the front gate. No street signs or distinguishing landmarks suggest the location.

As Sallwasser closely examined the image, she honed in on a small white banner partially hanging from a crossbeam above the ticket windows. The object appeared inconsequential, draped over itself and containing what looked like a hand-written message.

But when Sallwasser enlarged the shot, she distinguished the words “Stars Park” and she realized there was more to it.

“Yeah, it was falling down and just in the corner it said, ‘Stars Park,’” Sallwasser explained. “It was strange because I would have expected the name of the park to be more prominent than that, to be a bigger part of the sign. That’s why I was really confused about whether this really was Stars Park or not.”

She searched for verification. A corner of a building is captured on the left edge of the photo, but it bears no business name or discernible address. With her Sherlock Holmes radar now fully activated, Sallwasser looked for some kind of corroboration, online, in documents, through other photo archives.