Citadel of Fear by Francis Stevens

Citadel of Fear – Two men explore in Mexico for gold. One is thankful to leave with his life. The other, left behind to die, finds evil incarnate— Aztec hounds turned loose on the modern world.


Lost City of Desert Death by Harry F. Olmsted

Lost City of Desert Death – Out of the trackless Mexican desert rose the Fuente Grande temple of Aztec doom, built on the side of a mountain of gold. To this last lost stronghold of a vanished race, Arch Courier led his tenderfoot caravan- to learn why no white man, or woman, had ever left Fuente Grande alive!