In the forward the author states that this is not a work of fiction and refers to the book he relied upon for this research: Lalita Vistara, a collection of legends and scholastic dissertations; the poem Buddha Carita of Asvaghosa Jatakas, stories in which the Buddha recalls his former lives; two modern books, Le Bouddha by Oldenburg and Histoire du Bouddhisme Dans L"Inde by Kern Illustrated by by Mac Harshberger
THE LIFE OF BUDDHA by A. Ferdinand Herold
Translated from the French by Paul C. Blum
Tokyo: Tuttle Publishing, 1954. Softcover wraps with edgewear, one crease to spine. Translated from the French.