The "gems" of the collection include over 8,000 rare books, pre 1850. The modern books (post 1850) consist of over 100,000 titles.
Set of Signals from the US Frigate Chesapeake- 1810
Lead in spine so book would sink if it needed to be thrown overboard.
Ship set sail from Bosten and lost a15 minute duel vs. Britain.
After this loss, the American Navy had to change their codes!
This is where the term "don't give up the ship" originates. Interesting...
Notice something funny about this map?
Visit their collections online at http://www.nmm.ac.uk/explore/collections/by-type/archive-and-library/