Here's a couple of Japanese Maples in my garden. Picture taken in the Fall. Mike

Hmmm...where to start. First of all, there are nearly a thousand different cultivars of Japanese maples. About a third (or maybe more) of them have red leaves at least a portion of the year. Secondly, japanese red maple would be a misleading name since a red maple is a native maple to the US that has green leaves and red flowers. Red japanese maple would make more sense. So, "Japanese red maple" could refer to one of hundreds of cultivars that have been reproduced by grafting, or it could be a red seedling that shows good red characteristics. This would mean that 'red select' is a specific cultivar of a red japanese maple. You must also consider whether or not it is a weeping red dissectum (fine lacy leaves) or an upright palmatum (star shaped leaves). 'Red select' is one of many red dissectum cultivars (lacy and weeping). I think 'red select' is a seedling from 'inaba shidare' (guys I know Vertrees claims that they are one in the same, but I have convincing information that says otherwise). They are similar, but some claim there are distinct differences (and by distinct I mean practically with a magnifying glass). Other similar common cultivars include 'crimson queen', 'tamukeyama', 'garnet', and the newer 'red dragon'. A couple of good red upright cultivars include 'bloodgood' and 'fireglow'. Search these names and this should shed some light on what the differences are.

In 7b you shouldn't have any worries overwintering a JM in container outdoors. I grow most of my maples in containers and have yet to a lose a single one from cold damage :-) And there is no need to offer any particular kind of protection unless the temperature plunges into the low 20's or teens for any length of time. Just keep an eye on the weather and if arctic lows are predicted, then you may want to consider bubblewrap (around the pot ONLY) or moving the pot to a more protected location. Water only enough to keep the soil just moist to the touch. And frost is not really an issue......the only concern would be sudden hard late frosts that may occur when the tree is breaking dormancy or just after. You may want to cover small, unestablished trees during these priods.

Often young oaks have leaves that vary considerable from older plants of the same species. It is red oak group due to pointed leaf tips, but closer than that I doubt it can be IDed due to its youth unless there is a mature oak nearby which might give you a reasonable guess at species.