oak tree ID #1

I want to plant some acorns - can someone tell me what kind this is. this first one has a single trunk that's straight and about 16 inch diameter with whitish gray and darkish gray patches of bark, about 60 feet tall at least.

 

Again, a photo of the underside of a leaf with a 15cm ruler (and try to make the pic a bit brighter!!), plus location of the tree, please.

 

here's a photo of underside of leaf, location is Amarillo TX.

 

so would this be a shumardii? definitely not a white oak?? bud lenght is 5-6 cm.

 

Thanks!

I'm thinking perhaps Quercus texana, given the prominent yellow hair tufts in the vein axils on the underside. Q. shumardii also has them, but usually has a broader leaf with the lobes more prominently divided into 3 broad sub-lobes at the tip.

Not sure about oak #2, which doesn't have any tufts.

There is a very good USDA Forest Service field guide to oaks, downloadable for free (pdf file) which would be worth getting; it used to be available from this address:
http://www.fs.fed.us/foresthealth/technology/native_oaks.shtml
but the USDA Forest Service website is in chaos with re-organisation, and I can't find where it can be obtained from at the moment. Even their own search facility still gives the old web address! I've got a copy I downloaded a while back but it is too large (8.4 MB) to attach here.