1844-48
Ludwig Leichhardt travelled from Jimbour Station to Port Essington, north-east of Darwin (Map) Journal of an Overland Expedition in Australia 1844-1845.
1846-50
John MacGIllivray, naturalist in H.M.S. Rattlesnake, commanded by Captain Owen Stanley recorded the details of voyages in search of a convenient opening in the Barrier Reef to enable ships to sail from New South Wales to India through Torres Strait in Narrative of the Voyage of H.M.S. Rattlesnake, 1846-50.