Lost City of the Damned

A condensed version of this novel appeared as "Jungle Safari" in Nuetzel's two-story collection Jungle, Jungle (Powell, 1969).
The original Pike edition was reissued with a new number (801), a new title (Nymphos Be Damned), and a lurid cover, but the inside of the book was not changed (same title on title page).

Originally published in 1961 under the name Alec Rivere, and again in 1969 (data unknown). Internally dated 2007.