When was John B. Campbell Handicap top three finishers created?

Please provide more context! There are multiple horse races with "John B. Campbell" in the name, and it's impossible to know which one you're referring to without more information.

For example, you could provide:

* The year of the race: Knowing the year will help narrow down the possibilities.

* The location of the race: This will help determine which specific John B. Campbell Handicap you're referring to.

* Any other information about the race: If you know the track, the distance, or any other details, it can help pinpoint the exact race.

Once you provide more context, I can help you find the information about the top three finishers.