This is The Visitor by Ignaz Gaugengigl (1853-1932). Born in Germany, he settled in Boston, and many of his paintings, including this one, are on display in the Museum of Fine Arts there. I love the way the lady visitor is waiting in a room or hallway, and is almost a part of the furniture.
This one is for Danielle, of A Work in Progress, who sent me a postcard with this picture on it -- it just arrived today! Lovely.