An 1855 entry in this Scottish missionary's African journal mentions the discovery of Victoria Falls
In 1855, Dr. David Livingstone became the first European to see the ... 
only plants mentioned by at least three knowledge holders in the... [DOC] [TLE] Victoria Falls Bits and Blogs: March 2013 [PAR] Mar 1, 2013 ... Only known to the wider world since 1855, when David Livingstone made their 
existence popular knowledge, ...