The National Library in Lalitpur has 45,000 volumes. The Bir Library, founded in the 14th century, contains 15,000 manuscripts. Other important collections are maintained by the library of Tribhuvan University (18,000 volumes) and the Singh Darbar, Nepal-Bharat (41,000), and the British Council libraries, all in Ka¯thmāndu. The National Museum (1928) and the Natural History Museum (1975) are both in Ka¯thmāndu, along with a postage museum and the King Tribhuvan Memorial Museum. There is a Museum of Excavated Archeological Antiquities in Lalitpur and a woodworking museum housed in the Palace of Fifty-Five Windows in Bhaktapur.