The House of Commons Library is the library and information resource of the lower house of the British Parliament. It has adopted the phrase "Contributing to a well-informed democracy" as a summary of its mission statement.The Library was established in 1818 and a purpose-designed library was built for it by Sir John Soane and completed in 1828. This building, along with much of the mediaeval Palace of Westminster, to which it was added, was destroyed by fire in 1834.
The Library was stocked with some 30,000 books majoring in history, topography, literature, biography and politics, as well as the official papers of the House. Almost alone among contemporary parliamentary libraries, from about 1860 onwards, the staff were given free rein to determine the scope of the collection.