An official history is a work of history which is sponsored, authorised, or endorsed by its subject. The term is most commonly used for histories which are produced at a government's behest. However, the term may also encompass, for example, company histories, i.e. histories of commercial companies which the company itself has commissioned. An official biography (one written with the permission, cooperation, and perhaps participation of its subject or its subject's heirs) is often known as an authorized biography.