We are planning a trip to DC in September and we have it on our itinerary to visit the National Postal Museum. I've been reading some interesting blog posts about it and am very excited to spend a good half day there- meeting other interested folks, seeing the history of the postal service, getting story ideas, taking pictures.
Pushing the Envelope is the blog of the National Postal Museum.
British Postal Museum has a blog
The Traveling Wheelchair's post on the museum.
All My Hues has a July 2010 post with pictures
Have any of you been there? Do you have recommendations of what to see and do there?