In 1889, an intrepid, 20-year-old American called William Stamps Cherry made a solo voyage up the Congo's tributaries.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/fighting-poachers-central-africas-secret-eden
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/new-times-rwanda
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/poaching
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/elephant
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/illegal-trade
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chad
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sudan
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/central-african-republic
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa