Henry Morton Stanley's first trans-Africa exploration for and successfully found the missionary and explorer Livingstone, greeting him with the famous (though disputed) words: “Dr. Livingstone, I presume?” Stanley's journey had four principal aims, to: There was controversy among earlier explorers as to whether these lakes and rivers were connected to each other and the Nile. Richard Burton thought that Lake Victoria might have a southern inlet, possibly from Lake Albert, meaning that the source of the Nile was not Lake Victoria as Speke had argued. Samuel Baker thought that Lake Albert might have an inlet from Lake Tanganyika. Livingstone thought that Lualaba was the source of
PS Speke "Speke" and her barges were used mainly to carry cotton for export from nearby plantations. When the railway operator's successor, the East African Railways and Harbours Corporation (EARH), completed its northern Uganda extension from Tororo to Pakwach it superseded the Victoria Nile ferry service. EARH withdrew "Speke", "Stanley" and "Grant" from service in 1962 and offered "Speke" for sale in September of that year. The track of the Busoga Railway was lifted in 1964. PS Speke PS "Speke" was a British stern wheel paddle steamer in Uganda. She was built for the Uganda Railway in 1910 to operate on Lake