Thank you all for the prompt and helpful responses. To the poster
with the pictures, I envy your large "yard" :-) and yes, next time I
will know better and go pick them out myself with the exact and proper
scientific names instead of just pictures.

And yes the pictures were taken from established gardens. Also, the
two trees we bought are pretty large size. The river birch is around
15 feet and the dogwood is around 12 feet. We have these trees for
almost 1.5 years, and they are still under "warranty" so we want to
make sure we get the right ones. I would hate to have waited 10 years
and found out they are not what I want

I don't know how to post a picture yet. When I do, I will try to post
them so you can help me identify the exact variety.

Thanks, all, again.
A.