Hello and welcome aboard. Sometimes the Gallery section of the tree forum is less traveled so I will hazard my guess until the oak experts come along. I dunno why GW has to divide up the forums soooo much and hide posts. First, I assume Pin Oaks do well in your area. In most of St Louis they do great but there are patches where the soil is too alkaline or something and many there have yellow leaves and some defoliation. I would not want to fight nature for a hundred years like some of them folks are. The tree with the bare leaves in the first picture worries me. Rough winter after transplant stress maybe? My general advice in May is to give it a month to see if the tree rebuds. If not replace in the fall during prime planting season. The last picture to me looks to have a red tinge. Is it that or the small brown spots that have your attention? I don't know what part of the country you are in but we have had an odd week. 30's one night, 90's the next two days. I was amazed I did not see some foliage damage while I was mowing but sometimes it seems to take a few days. How has your weather been? Far as what to do to help them? Probably not much. Every few days stick a finger six inches or so into the soil and check on the moisture level down by the roots then do the right thing. Trees in general like deep watering while shallow rooted lawns like a bit at a time frequently. Good luck.

Right click and copy the html image code to the right of your photo then paste it into a reply here. When you hit "preview" you will see your photo- if you can't see it neither can we. Doing this helps folks see what you are talking about without them leaving this site, opening new tabs etc. You are just making it easier for people to help you- sometimes a moment is all they have and a picture is worth 1000 words. Also, please include some sort of clue as to where in the world this tree is located- trees in Florida have different issues than trees in Wisconsin :)

In my experience, most regular saw mills don't want a residential tree due to hardware since they have large circular saw blades, and damaging a tooth or two is an expensive thing to fix. However, bandsaw mills have much less expensive blades. Often folks with bandsaw mills will be happy to either take the logs or do the sawing at your place and turn them into lumber. DH worked at a regular saw mill in his younger years and now has a portable bandsaw mill. We are both woodturners and he often gets calls from neighbors or other turners about trees that they would like to have sawn into lumber for woodworking of various sorts, including turning blanks. Depending on Don's tree, there may well be some good wood in it so it's probably worth a phone call to see if once the tree has been taken down by someone qualified there will be interest in it as wood. The pin oaks I grew up with started branching above the second story windows, and poor lumber often makes great turning stock, though since it doesn't grow in this area much we haven't ever gotten a pin oak so I don't know for sure how well it turns. Other oaks are fine. Here's a link to an article about woodturners salvaging an old elm on the other side of the state from you: http://www.stltoday.com/news/state-and-regional/missouri/article_b880f39a-4840-5418-9139-4ac39f45929a.html and below is a link to a St. Louis woodturning group. Here is a link that might be useful: woodturners of st louis

It's not Oak Wilt which would neither originate from a spruce (spruce is an incompatible host) or spread crown to crown (it's a systemic fungus). Best guess from what I can see is either mechanical damage caused by the oak leaves being blown back and forth against the scratchy spruce twigs or sun scorch when previously shaded leaves were exposed to full sun as the spruce continued to die. Leave it be this year, remove the dead spruce, and see if this issue recurs next year.