I got lucky this time with this postcard. I was able to find both the title of the painting on the postcard and a biography of the artist. The painting on the postcard is the work of K.A. Korovin and it is entitled "In The South." Konstantin Alekseyevich Korovin (November 23 [O.S. December 5] 1861, Moscow - September 11, 1939, Paris) was a leading Russian Impressionist painter.
Oil on canvas
66.5 x 54.5
Penza Regional Art Gallery (K. Savitsky Picture Gallery) Penza, Russia
K.A. Korovin Wikipedia Entry
Penza Regional Art Gallery