I have singled out the North African stories because Lang's books are very valuable in that regard. For the other regions of Africa, there are lots of colonial English-language sources, but not for North Africa because the 19th-century sources are in German or French. Update. I did find one book by Rene Basset in English which contains Berber and Kabyle stories; you can see those stories here: Moorish Literature.
The "view" link takes you to a presentation of the stories at the MythFolklore.net site (no illustrations); you can also use the link to the specific fairy book itself (by color) to access a version online that might have an illustration. The bibliography information, such as it is, comes from Andrew Lang's brief notes (sometimes very brief notes) for each story.
NORTH AFRICA:
ADVENTURES OF A JACKAL
Berber. Nouveaux Contes Berberes. par Rene Basset.
VIEW - included in the Orange Fairy Book
ADVENTURES OF YOUNGER SON OF JACKAL
Berber. Contes Berberes. par Rene Basset.
VIEW - included in the Orange Fairy Book
ADVENTURES OF JACKAL'S ELDEST SON
Berber. Contes Berberes.
CLEVER CAT
Berber. Contes Berberes. (adapted)
VIEW - included in the Orange Fairy Book
SAMBA THE COWARD
Contes Soudainais. Par C. Monteil
VIEW - included in the Olive Fairy Book
DAUGHTER 0F BUK ETTEMSUCH
Märchen und Gedichte aus der Stadt Tripolis. Hans von Stumme.
MOHAMMED WITH THE MAGIC FINGER
Märchen und Gedichte aus der Stadt Tripolis. Hans von Stumme.
STORY OF DSCHEMIL AND DSCHEMILA
Märchen und Gedichte aus der Stadt Tripolis. Hans von Stumme.
UDEA AND HER SEVEN BROTHERS
Märchen und Gedichte aus der Stadt Tripolis. Hans von Stumme.
STORY OF HALFMAN
Märchen und Gedichte aus der Stadt Tripolis. Hans von Stumme.
VIEW - included in the Violet Fairy Book
EAST AFRICA:
DEATH OF ABU NOWAS
Tunisian. Tunische Märchen.
VIEW - included in the Crimson Fairy Book
ROVER OF THE PLAIN
Baronga. Etude Ethnographique sur les Baronga. par Henri Junod.
VIEW - included in the Orange Fairy Book
MOTIRATIKA
Baronga. Junod.
VIEW - included in the Crimson Fairy Book
HEART OF A MONKEY
Swahili Tales. by Edward Steere. LL.D.
ONE-HANDED GIRL
Swahili Tales. by Edward Steere. LL.D.
VIEW - included in the Lilac Fairy Book
STORY OF A GAZELLE
Swahili Tales.
NUNDA. EATER OF PEOPLE
Swahili Tales. (adapted)
STORY OF HASSEBU
Swahili Tales. (adapted)
SOUTH AFRICA:
MAGIC MIRROR
Senna. Rhodesian Tale.
STORY OF HERO MAKOMA
Rhodesian Tale.
VIEW - included in the Orange Fairy Book
SACRED MILK OF KOUMONGOE
Contes Populaires des Bassoutos. traduits par E. Jacottet
JACKAL AND SPRING
Contes Populaires des Bassoutos. traduits par E. Jacottet
JACKAL DOVE AND PANTHER
Contes Populaires des Bassoutos. traduits par E. Jacottet
LITTLE HARE
Contes Populaires des Bassoutos. traduits par E. Jacottet
You can find Jacottet's book in English here: The Treasury of Basuto Lore.
