I did some modern research on this, too, and as Stallzer noted, the post office "officially" closed in 1934, however, it has been somewhat of a tourist attraction in the area it would seem, as it was known as "Uncle Ike's Post Office". Here's a "modern" photo postcard showing the post office next to a vintage postcard showing the same location:

I even went a step further and found an image of the First Day Ceremony Program that references the great-grandson of "Uncle Ike" being a participant in the First Day of Issue ceremony for the stamp.

Nevertheless, I still can't make the connection of what the Surrey stamp had to do with the FDOI being assigned to this location.
