More like The Nine Unknown

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The Ghost KingsNovel
H. Rider Haggardstandalone novel1908
Mystery & detective, set in africa.
TarzanUniverse
universe100 books1912
Adventure, adventurous in tone, set in early 20th century.
“Deep in a jungle no map has tamed, an English lord's orphaned son is suckled by a she-ape and grows to manhood knowing neither his name nor his kind.”
from the catalogue
Start with Tarzan of the Apes →
includes Tarzan, The Wild Adventures of Tarzan, The Tarzan Trilogy, Tarzan and the Martian Legion, Tarzan's Africa / Opar / Khokarsa
Queen Sheba's RingNovel
H. Rider Haggardstandalone novel1910
Set in africa and 19th century.
The Lady of the ShroudNovel
Bram Stokerstandalone novel1909
Gothic and romance, set in europe and mountains.
“Rupert Sent Leger inherits his eccentric uncle's fortune on one condition: he must spend a year living in the family's castle in the Blue Mountains, a small, embattled corner of the Balkan coast under threat from Turkish forces.”
from the catalogue
The Lost ArkNovel
J. R. Rainstandalone novel2010
About survival, set in middle east and contemporary.
“In a lonely bar in eastern Turkey, ex-National Geographic photojournalist Sam Ward is hired to find an eccentric professor who disappeared high atop Mount Ararat, fabled resting spot of Noah's Ark.”
from the catalogue
The Lost TrumpetNovel
J. Leslie Mitchellstandalone novel1932
Historical fiction, about magical artifacts, set in middle east.