When you arrive at the home of The D.C.History Center, don't be confused by the Apple logos on the front of the building (the Center shares space with an Apple Store on the first floor).
When you enter this beautifully restored building, head upstairs to the History Center where it's very likely you will be greeted by a friendly member of the Historical Society of Washington, D.C.
There were two exhibits open when we visited, a panoramic photo display called The Big Picture and a room size timeline called the D.C. Hall of History. They really do a great job of celebrating the culture and history of D.C., not just as the nation's capital but as a city with its own story to tell. Plan to spend an hour here at most.
The Kiplinger Research Library was not yet open, but should resume operation in August of 2019.