As it is captioned as  it is likely to qualify under PDold or similar If you go to the source file you can download  then zoom to examine the writing in the bottom right  Hotel  Westgate It may then be able to trace the hotel which presumably distributed it  therefore get an exact date You may also be able to zoom to see the detail of the posters displayed  although when I tried this the pixelation was too bad to read Alternatively again why not just contact the Cleveland Pools web site  ask where they got it from