Pears Cyclopaedia: a one volume encylopaedia published annually in the United Kingdom.
Probert Encyclopaedia: an online topical encyclopedia consisting of almost 100,000 short entries, published by Mathew Probert and based in the United Kingdom.
... Lewis, (1774-1809), leader of the first American expedition to cross the continent
David Livingstone, (1813-1873), explored south and east Africa, determined ...