This photo was taken in 1913, looking west from the Delaware & Lackawanna Railroad crossing on Freeman St., towards the town of West Orange. If you stand under the current NJ Transit bridge on Freeman St., you're very close to the same spot where this photo was taken.
Back in those days, the train line simply ran down the street on the west side of Scotland Rd., which created more than a few problems as trains frequently had to avoid hitting pedestrians, horse-drawn carriages, trolleys, and the new invention known as an automobile. So a massive project was undertaken to elevate the railroad from East Orange around the bend down to South Orange.
The below shot shows the station itself (it peeks in at the left edge of the above photo—across Freeman St. from where the station stands today) from the opposite angle as above, looking East up Freeman St. toward Orange.
Note the horse-drawn “taxis” of the day lined up waiting to pick up passengers and commuters! As the local hat-making industry left town and the factors closed, many of the supporting businesses dried up. Today, this area is slowly being renovated, with this block in particular being turned into some neat little art galleries featuring some great works by local artists who live upstairs or nearby.
Now on to the cache: You're looking for a nefarious micro cache stashed in between the spots where these photos were taken on Freeman St. In fact, it's hidden directly in front of the one building from the top photo that's still standing! Again, this one's a micro, so bring your own pen or pencil...
Congrats to MamaKas716 for the FTF!