1873-75 are the inclusive dates for Verney Lovett Cameron’s transcontinental expedition. The member of an expedition sent to resupply David Livingstone, Cameron decided to push on after his party received word that Livingstone had died. He hoped to determine whether the Lualaba river flowed into the 
Nile or the Congo, thereby resolving a conundrum that had preoccupied Livingstone, but he was obliged instead to take a more southwestern route across the continent. Image: Lock and Whitfield, Photograph of Verney Lovett Cameron, taken in 1878, and published in “Men of Mark: a gallery of contemporary portraits of men distinguished in the senate, the church, in science, literature and art, the army, navy, law, medicine, etc,” written by Thompson Cooper, published at London, Sampson Low, 1876-1878. This image is in the public domain in the United States because its copyright has expired. Note that the exact month of the beginning and end of this expedition is difficult to determine.
BRANCH is an open-access publication 