Pears soap, launched Pears Shilling Cyclopaedia in December 1897. The most recent edition (2002-2003) is the 111th edition.
Each edition features an atlas, a gazetteer, a list of prominent people (past and present), a mini encyclopaedia of general information and a chronological list of events. In addition, each edition features a collection of around a dozen or more other sections about a specialist subject such as cookery, classical mythology, gardening etc.