References in classic literature ?
Richardson, Barth, and Overweg, jealously anxious to push their investigations farther, arrived at Tunis and Tripoli, like their predecessors, and got as far as Mourzouk, the capital of Fezzan.
Finally, at the end of three weeks, on the 14th of April, twelve months after having quitted Tripoli, he reached the town of Ngornou.
He regained Tripoli toward the close of August, 1855, and arrived in London on the 6th of September, the only survivor of his party.