anyone know this family

[Jo McDonald]

It doesn't look like Hal to me --- I never knew him to have a mustache, if you are talking about the rider with the children.

We always had a parade at fair time.

[TWV]

The parade was in 2000, I said Memorial Day Weekend, but it may have been around the rodeo time. I do remember it was early summer. I really thought it was in May, but could have been July.
The mustache of the guy in front was added by my wife.

[DanCookson]

Looks a little like Hal's son Brian.  He would have kids that age too....