With presentation inscription from Edgar Rice Burroughs to his wife on the front free endpaper, "To Florence Burroughs, with all my love always, Ed, Oct. 12, 1938." Florence later inscribed it to her younger brother on the same page, "To Eddie, Because I love you, Florence Gilbert Burroughs." A printed label is mounted on the front pastedown, "This is the First Bound Copy"; ERB made certain the gift to his wife was quite special. Florence Gilbert Burroughs' bookplate has been tipped above the label. With the two states of the striking jacket designed by ERB's son John Coleman Burroughs, laminated and plain. Tarzan finds two hidden cities in an extinct volcano while searching for a man and a huge diamond. The only Burroughs book (to 1964) to have a color frontispiece. This was also the first of the Tarzan titles to be illustrated by John Coleman Burroughs, the author's younger son. Heins T23.1; Zeuschner 569.