Brussels: Institut des Parcs Nationaux du Congo Belge, 1941. Octavo, photographs and text illustrations, owner's stamp, publisher's printed wrappers, partly unopened. In French. Fascicle 1. More
Brussels: Institut des Parcs Nationaux du Congo Belge, 1941. Octavo, coloured plates, photographs and text illustrations, owner's stamp, publisher's printed wrappers, partly unopened. In French. Fascicle 33. More
Kinshasa: Institut des Parcs Nationaux du Congo Belge, 1966. Octavo, photographs and text illustrations, owner's stamp, publisher's printed wrappers, partly unopened. In French. Fascicle 48. More
Kinshasa: Institut des Parcs Nationaux du Congo Belge, 1968. Octavo, photographs and text illustrations, owner's stamp, publisher's printed wrappers, partly unopened. In French. Fascicle 52. More
Brussels: Institut des Parcs Nationaux du Congo Belge, 1950. Octavo, photographs and text illustrations, owner's stamp, publisher's printed wrappers, partly unopened. In French. Fascicle 64. More
Brussels: Institut des Parcs Nationaux du Congo Belge, 1959. Octavo, photographs and text illustrations, owner's stamp, publisher's printed wrappers, partly unopened. In French. Fascicle 56. More
Brussels: Institut des Parcs Nationaux du Congo Belge, 1953. Octavo, photographs and text illustrations, owner's stamp, publisher's printed wrappers, partly unopened. In French. Fascicle 6. More