The Library of Congress burned twice and destroyed all of the collections both times. When Congress anticipated restarting the third time, Thomas Jefferson offered to sell his personal collection of thousands and thousands of books to the Library. There was resistance because Jefferson's books covered a wide range of subjects and arts. Many did not think all those appropriate or necessary for a Congressional library.
 
It was finally agreed to buy Jefferson's library as the foundation for the newest Library of Congress. A subsequent fire destroyed three-quarters of that collection. The books that were saved are now housed in a special room and shelves. Protected with glass on the front and back, the shelves form a circular spiral with a slip opening on one side.
 
The photograph above was taken on the recent trip to Washington DC that I've mentioned. During our tour of the Library of Congress, we were told at one point that photographs were not permitted at two locations. I learned that there were actually many more locations where photos are not allowed, including here. This photo is a ten second exposure. Within seconds a security guard was present telling me that I couldn't take any shots or they'd confiscate my camera. I certainly did not intend to break any rules and now feel fortunate to have by happenstance captured this scene. The reason for no photographs is the deleterious affects of the bright light from flashes. This was taken without a flash (hence the long exposure) so my conscience is clear.
 
But now you have no such excuses. You know.