TARZAN AND THE VALLEY OF GOLD by Fritz Leiber                Ballantine Books, First Edition, April 1966                                    Condition: About Very Good                                                        HADON OF ANCIENT OPAR by Philip Jose Farmer                    DAW Books, First Printing, April 1974                                          Condition: Very Good+                                                                                                                                                                        VALLEY OF GOLD was the first new, authorized Tarzan novel in many years.  This book is based on the script of the '60s movie of the same name.  It has some spine end wear and some other light exterior wear & darkenng on the cover backs.  Otherwise, ths is a tightly-bound copy with no writing or markings on the white pages.  ANCIENT OPAR, set 12,000 years ago, is a fabulous adventure of the lost city described in ERB's TARZAN AND THE JEWELS OF OPAR.   A light reading crease, some very light edge wear and small numbers stamped on the top & bottom page edges, else a sharp, solid, unmarked copy.