Martha Cahoon Oil on Masonite Consign Now DeptNantucket ArtSize9.5 in. x 13.25 in. Martha Cahoon (1905 – 1999) Oil on Masonite “Horseback Riding at the Ocean’s Edge”, depicting two mermaids swimming with fish, view of a church and village in the distant landscape, signed lower right Martha Cahoon. 9.5 in. x 13.25 in. Please note that this auction has ended. Click here for an overview of this auction.