Tarzan and the Forbidden City (The Tarzan Series Book 23)

315, [1] pp. 8vo. Color frontispiece and four black-and-white plates by John Coleman Burroughs. The twenty-fourth in the Tarzan series. 'The search for a man and a huge diamond brings Tarzan to two cities hidden in an extinct volcano... FC-1 has the unique distinction of being the one and only Burroughs book to have a frontispiece in full color. This was the first of the Tarzan titles to be illustrated by John Coleman Burroughs, the author's younger son. By contrast, the 1948 reprint has a very crude frontispiece, a different one, utilizing the jacket picture but with large uneven blank spaces gaping where the original title-and-author lettering was deleted.'