The methods of survival sometimes take on strange forms here, but if we do not adapt to them, the jungle will swallow us! 
- — Tarzan
Tarzan Family #66 is an issue of the series Tarzan Family (Volume 1) with a cover date of December, 1976. It was published on August 9, 1976.
Synopsis for Korak, Son of Tarzan: "A Gift Most Deadly"
After boasting to his father about having a "fantastic" birthday gift for his mother, Korak must now hunt for the bejeweled elephant tusks, before tonight's celebration begins.
Appearing in Korak, Son of Tarzan: "A Gift Most Deadly"
Featured Characters:
Supporting Characters:
Antagonists:
- giant locusts
Other Characters:
- N'Kima (monkey)
- an unnamed talisman
- Diamond-Tusk (elephant)
Locations:
Synopsis for "John Carter: Prologue"
This story is reprinted from Tarzan #207.
It is the year 1866. John Carter is a former confederate soldier from Virginia who now seeks his fortune with his partner, Powell, in Arizona. But a tribe of savage Indians attacks them and Powell is killed. John pulls Powell's body into a cave for shelter. Suddenly, a strange energy washes over John and his life-essence is pulled out of his body.
He awakens to find himself on the planet Mars. Exploring a nearby community, he discovers a nursery with dozens of small eggs and little green bug-eyed aliens. He then finds a troupe of strange Martian soldiers heading his way. These Martians are at least 10-feet tall and have two sets of arms. He tries to communicate with them, and the Martians gesture for him to mount one of their demon-steeds. They all head to a waiting city as John wonders if he'll ever be able to return to his own world.
Appearing in "John Carter: Prologue"
= Featured Characters:
- John Carter Warlord of Mars (First appearance)
Supporting Characters:
- Tharks (race)
- Tars Tarkas (First appearance)
Antagonists:
- American Indians
Other Characters:
- Powell (Single appearance; dies)
Locations:
Synopsis for John Carter, Warlord of Mars: "Prisoner of the Tharks"
Captured by the Tharks, John is escorted to their kingdom where he is inspected by the king. He lashes out, killing one of the king's men. The king's court applauds John and he is told to follow a female Tharak into a dungeon. There, he is guarded by a dog-like beast. John leaps over the creature, and makes his escape. As he breaks out through an open window, another creature attacks him. Suddenly, the dog-beast leaps upon the second creature, killing it. John realizes that the dog-beast wasn't to guard him, but protect him, and the two walk away from their fallen foe as companions. Reprinted from Tarzan #208.
Appearing in John Carter, Warlord of Mars: "Prisoner of the Tharks"
Featured Characters:
Supporting Characters:
Antagonists:
- Ape-like beast
Other Characters:
- Powell (Dies in flashback)
- Tharks (race)
- Woola (guard dog)
- Sola (daughter of Tars Tarkas)
Locations:
Synopsis for Pellucidar: "The Amulet, the Power, and the Hero"
On the surface world, Cogdon Nestor discovers a telegraph giving him an account of the further adventures of David Innes in Pellucidar.
Innes has returned to the Earth's Core with the "iron mole" loaded with books, blueprints and supplies. Once in Pellucidar, he goes into a village which is being terrorized by winged creatures. The villagers feel defenseless because their Amulet of Power has been stolen. Armed with swords, Innes and the chief go fight the creatures to win back the Amulet. After winning their battle, the villagers realize that the Amulet has no secret powers, but their survival and strength has always come from within, not from a worthless trinket. They discard it, and Innes continues his journey.
Appearing in Pellucidar: "The Amulet, the Power, and the Hero"
Featured Characters:
Supporting Characters:
- "chief" (village warrior)
- Village leaders
Antagonists:
- Mahars (winged creatures)
- Sagoths (ape-men)
Other Characters:
- Cogdon Nestor (narrator)
- Martha (village girl)
Locations:
- Pellucidar
- unnamed village
Items:
- Amulet
Vehicles:
- Iron Mole
Notes
- Also appearing in this issue of Tarzan Family was "Fantastic Creatures" (poster) by Neal MacDonald