6 ½" x 4 ¼" board.  This is a gouache painting on a board.  The board has a beveled gold edge.  See photos.  

Alice J Cutright Kaine was married to Dr. J. L. Kaine, the artist of whom she is referencing on the back. Her husband was a Major in the Civil War and she traveled with him before she was hired by Booker T Washington at Tuskegee Institute around 1900.  

On the back, in pencil, "April 1883, My shanty on my claim 20  miles from Aberdeen, S. Dakota.  Alice

Drawn by our special artist on the spot, J. L. Kaine.  And entirely correct."