This image features the Rainbow Falls area and a nearby cascade and walkway that illustrates the paths visitors might take when viewing the various sights in this park.
The description on the back of the card states:
Acclaimed one of the most beautiful waterfalls in America, Rainbow Falls in Watkins Glen, N. Y. derives its name from the brilliant rainbows that flash in the Summer sunlight.
As this was originally a black and white photo that was manually colored, there was no opportunity to capture the color effects mentioned in the description. There is no other commentary on the card, or indications of maker or publisher. It is very similar to other cards in this series that are believed to date from the 1940s.