Mystery Picture 091027

I found today's mystery picture while looking for a picture of a cow on the Stutz farm. No luck! The info about this picture, using my fancy pants file naming system, is pretty limited: 640700.JUL 64 H (20).Family Reunion.jpg.

Who is in this cute family? Where are they? Does anyone recognize the horse or car?

As an extra feature, here is the highest resolution scan I have of the super mysterious person cropped off on the left side of the above picture.

There's not much to go on, but it looks like tubing was involved. Can anyone tell who this is?

UPDATE

Darrel Crawford writes in the comments, "It looks like Gary Stutz on the horse." Thanks, Darrel!