At the Table

Does anyone know where/when this photograph is from? A reader sent it to me recently and asked if I could identify it. The two men are obviously Gary Gygax and Brian Blume. Based on the products displayed on the table in front of them, I'd peg the year to be sometime in 1981. Beyond that, I couldn't really say. Was this a promotional image produced by TSR? Did it accompany a newspaper or magazine article? I'd love to know more, if anyone has any insight into its origins.