Description:
Postcard with a photo of the main building of the Battle Creek Sanitarium on the front and a flap that can be opened. Inside the flap are two pictures, one of the Battle Creek U. S. Post Office and the other of the Phelps Medical and Surgical Sanatorium, c. 1910
Caption on front: Battle Creek Sanitarium, Battle Creek, Mich.
(Inside has two pictures with captions: "U.S. POST OFFICE" and "SANITORIUM." [sic])