From Hausaland to Egypt through the Sudan : illustrated.

von Kumm, Hermann Karl Wilhelm
London : Constable, 1910.
Umfang/Format: XI, 324 S., Ill. ; 25 cm.

Khont-Hon-Nofer : the lands of Ethiopia.

von Kumm, Hermann Karl Wilhelm
London : Marshall, 1910.
Umfang/Format: XI, 291 S. ; 23 cm.

The Sudan : a short compendium of facts and figures about the land of darkness.

von Kumm, Hermann Karl Wilhelm
London : Marshall, 1907.
Umfang/Format: XIV, 224 S. ; 22 cm.