The World Almanac and Book of Facts is a US-published reference work and is the bestselling almanac conveying information about such subjects as world changes, tragedies, sports feats, etc. It has been published yearly from 1868 to 1875, and again every year since 1886. It was number 1 on the Washington Post bestseller list on November 27, 2011. The 2014 edition (ISBN 978-160057-182-4) has 1,008 pages.