[drc]

If you mean Burke Photos, as in George Burke, he was a famous Pre-War baseball photographer who shot the photos for the 1930s Goudeys, and made some of the most recognizable images of folks like Babe Ruth, Joe DiMaggio and Jimmie Foxx. He produced a variety of photos, from large display to real photo postcards and photo stamps. Most his Pre-War photos were stamped with his name ("Geo. Burke") and 807 Belmont Ave. Chicago address. This stamp/address reliably dates a photo as vintage. His images were reprinted over the years, none of these reprints having the 807 Belmont Ave stamp on back. Unstamped original Burke photos are uncommon but do exist.

I briefly saw what were called Burke proofs in perhaps the Legendary Auctons, but I'm not exactly sure what those were. Didn't look closely.