Postcard showing the interior of the Battle Creek Sanitarium greenhouse, located behind the main Sanitarium building, c. 1909 Caption on front: Vegetable Green House, SANITARIUM, Battle Creek, Mich. 12. Written on back: How would you like to have something to eat from here? Louise Sent on: June 17, 1909 Sent to: Hon. Wilbur G. Guild, Ronca, Okla.