This topographic map of Libreville, on three sheets, was published in 1962 by the Institut Géographique National of France. It is printed in French.
Libreville et ses environs, feuille nord 
Libreville et ses environs, feuille centre 
Libreville et ses environs, feuille sud
Additional maps of Libreville and Gabon are available from TROPICARTA (requires Chomikuj account).