Frank Flood wrote:Based on pictures I think I recall seeing in the past, the "Pokes and Jabbs - THEATER" on the suitcase that Burns is holding might not mean that they are at the Pokes & Jabbs Theater, but rather that the suitcase belongs to Pokes & Jabbs, and the railroad on which they have been traveling should send it on the local theater in town if performers and suitcase become separated.
You may be correct on this point, however I still don't think the still is from BEHIND THE FOOTLIGHTS (1916), because as Rob pointed out both Pokes and Jabbs are clearly entertainers in this, and they are not so described in the plot synopsis for that film.