I hope this works.
I found this site and since this tree is not something you see everyday, I thought you might like it.
Enlarge the pictures so you can compare size with houses, cars, etc.
We used to live near it. You couldn't see it until the subdivsion was built up around it. It was a surprise to those nearby to see what was there. Then, they build houses and were wise enough not to cut it down.
It's not considered a championship tree as the people that know about such things, say it is really three trees that grew together.
Here is a link that might be useful: BIG tree