The Coming Race by Edward Bulwer-Lytton.
One 1960 book, The Morning of the Ma.
Some readers have believed the account of a superior subterranean master Race and the energy-form called "Vril", at least in part; some theosophists, notably Helena Blavatsky, William Scott-Elliot, and Rudolf Steiner, accepted the book as based on occult truth, in part.
It has also been published as Vril, the Power of the Coming Race.
The Coming Race is a novel by Edward Bulwer-Lytton, published anonymously in 1871.
The Coming Race by Edward Bulwer-Lytton