Do you know about apple trees?

[Ravenshire]

And also try to look up an agent (I never heard of a tree agent).

Take a couple apples, some leaves and some bark (don't peel the bark too deep, or just take a picture of it) to your local nursery. If they can't tell you what they are, they can point you in the right direction.

Make sure it's a nursery. The home and garden section of Home Depot, Lowe's and the like won't cut it. Those people can't tell the difference between an apple tree and a plum tree. I know, I have a plum tree in the front yard (according to Home Dept) that produces apples.

Most apple trees that get planted in yards are not meant for apple production, but as shade trees. The fruit will often be small and too sour to eat. They make awesome jelly though, if you're interested in home canning.