The British Library is classed as the national library of the UK founded in 1973 and holds the title for the second largest library in the world due to the amount of items it holds that adding up to over 150 million from all over the world. The library is known for its large research resources as it holds several different forms from print, digital, journals, newspapers, sound and so on. The library is a public place allowing people to use their reading rooms to carry out research (as long as they apply for a reader pass). They also hold a collection of British and Irish newspapers from as far back as 1840 due to the legal deposit legislation, a law which enabled newspapers to supply and copy of each edition to the library. The library also holds regular exhibitions throughout the year, open to the public which are usually advertised online or via OOH advertisement on buses and along Euston road on billboards.