19th Century Pair of American Folk Art Paintings

Late 19th century pair of American naive oils on canvas, of a boy and girl of the Bangs-Phelps Family, in colourful dress. 

In good original condition. 

After Erastus Sailisbury Field. 

The one painting closely resembling an original painting by him in the Metropolitan Museum of Art of a girl of the Bangs-Phelps Family. 

Circa 1880.