This vintage Niagara Falls postcard shows three paintings of the Falls area one in a rectangular golden square, one in a golden circle, and the third in a golden triangle.
It is a pretty postcard and old, pre-1907, with undivided back. The words sent to loved one or friend must be written on the front, so room is left for a message. Only the address can be written on the back, (See Postcard History)
It says on the back that it is an American Souvenir Card.