Please bear with me, as I'll be breaking this up into multiple posts for readability. Mods, if this is not the location for this thread, feel free to move.
Here is the route we took:
Texas
St. Louis
Erie, PA
Niagara Falls
Cooperstown
Boston (sorry, didn't see any memorials to AOC, that distinguished alumnus from Boston U.)
That covered about the first 5-6 days, the remainder of time was spent between a resort near Harrisonburg, VA, and side trips to various sites in DC, Virginia, MD, WV, and PA. IMO, we bit off much more than we could chew, a point on which my BIL agreed with me. Our two families met up at the resort, from which the two sisters decided on our adventures.
They did a pretty good job overall, though it entailed far more driving at night than desired. For example, we blew out a tire on I-95 in Providence RI at about 10 PM. GEICO road rescue was great, we were back on the road in an hour.
Let's get this show on the road!