There are several postcards of Oak Grove, made during the golden age of postcards from 1900-1920 when every prominent beauty spot and building or structure was fodder for the photographer’s camera. A penny postcard was the way to keep in touch with friends and family while traveling or on vacation and there are hundreds postcards of Fall River scenes available on Ebay and through dealers in ephemera.
The postcard above was postdated 1910 and shows ivy-covered walls and archway at Oak Grove. The ivy obscures the magnificent iron work of the gates as well as the inscription. There is a photograph of Oak Grove taken in 1890 which also shows the ivy growing on the gates, so it is likely this is how the Prospect Street entry looked at the time of the Borden funeral on August 6, 1892.
Below are two cards with no dates, showing the arch with and without ivy. All postcards shown here were purchased on Ebay.
Arch today: 
Friends of Oak Grove Cemetery 