It's interesting that The Sting should use this device as well because, if you've read any of my title sequence posts before, the title sequences before the 1950s were generally fairly utilitarian. By the mid-30s, they started featuring some illustration behind their title, but it wouldn't be until the great artists of the 50s, including Wayne Fitzgerald and most importantly Saul Bass, who really perfected the art. So the filmmakers of The Sting did what movies do best: it adapted an old idea to make it new and original. They maintained the emphasis on the stars (as was the case in the great Studio days) and mixed it with more artistic titled. And they turned to the great Jerry Gebr to do it.
I've done a few posts on Jerry Gebr and his illustrious career in film and television before- so if you've never heard of him- read up on him. He was responsible for some of the most notable pieces of art that appeared on Universal television programs and movies in the later-20th century. One of his most notable film contributions are the titles for The Sting. I say titles, not opening titles, because they appear throughout the film to note the different sections of the film. I feel that the use of titles throughout the film is a clear throw-back to the dialogue titles of the silent films of the '20s. And this idea is supported by the repeated use of Joplin's The Entertainer throughout the film. So, while the film takes place in a very nostalgic '30s, it has almost a more vintage feel to it. This contributes to the feeling that the film is pure entertainment.
It should be noted that these stills are in no particular order. I'm sorry. While I've seen The Sting, I haven't memorized the order of the titles yet. If you really need to know- it gives you the perfect excuse to watch the film again!