Paleopoint said ...
"Well, perhaps my later droppers are from my own selectivity. At least I hope it is.
Here's the story: My first trees, my oldest.....all came from acorns that I collected on the campus of Michigan State University in East Lansing. Years before as a student I had noticed the huge crops those trees were putting out. Later in life I went back to the campus to gather some. But I did so after identifying particular trees over at least a 10yr period. I looked for trees that were annually productive AND held their acorns longer than others. I eventually selected 5 such 'source' trees. MSU must have 200+ EO's all over south campus....so I collected from them. (4 of the 5 have now been removed for construction projects)."
Exactly what all of us should do ... to the extent possible. I salute you; job well done. What would I do next? Check as many of those 200+ trees as I can; looking for one located wiuthin 30-50 feet of another white oak species ... especially a bur oak or straight white oak. Both will hybridize with English oaks; since they are wind pollinated, acorns off an English oak pollinated by one of the other 2 might produxce acorns of a hybrid. Not an f1 offspring, but a true hybrid. I believe it's worth the effort. If you find such a circumstance, I'd gatther acorns from both of the suspected parent trees and plant a couple of acorns from each to see what results. Some folks won't have the patience to do this; however, I believe habitat development is a long game.