This was also my first visit to a Presidential Museum (well, I'd been to Hyde Park but I was 13 and not really interested.) -- there was a lot of stuff about the Nixon years and Watergate. All in all quite an interesting visit! Here's some pictures.
A chunk of the Berlin Wall (given as a gift to the American People)
The implements used to break into Watergate!
Facsimile of the letter of resignation of President Nixon.
The staircase used in the evacuation of Saigon.