Hello All,  It seems that most of the "Mission Oak" or "Arts and Crafts"
style pianos that I've seen photos of were made in upright form rather
than as grand pianos.  Here is an example of a good selection of the
upright style, tucked among other photos:

  http://www.antiquepianoshop.com/products/upright/mission-arts-crafts-upright/page1/ 

I am the proud owner of one in exactly this case style, by Kimball:

  http://www.antiquepianoshop.com/product/17/kimball-arts-crafts-player-piano/ 

Someday I hope to have the time to rebuild it!

John Bartlett
Woodruff, South Carolina