At least 12 (maybe 13 or 14) life-bearing worlds in the Solar System are visited or mentioned in the Gerry Carlyle stories. Created by Arthur K. Barnes, Gerry "Catch-'em-Alive" Carlyle is a beautiful interplanetary huntress who roams the Solar System acquiring exotic beasts for the London Interplanetary Zoo. She was featured in her own series of stories, and in a couple of crossover stories with Tony Quade, a character created by Henry Kuttner.
Five Gerry Carlyle stories ("The Hothouse Planet", "Satellite Five", "Siren Satellite", "The Seven Sleepers", and "Trouble on Titan") were published as the fix-up novel Interplanetary Hunter by Gnome Press in 1956; this was reprinted in paperback by Ace Books in 1972. These five stories and two more, "The Dual World" and "The Energy Eaters", are available for free at Critical Press Media.
Earth: inhabited, of course; Gerry Carlyle's home base:
She was dressed in mirror-polished high boots, riding
pants, and polo shirt open at her tanned throat; these were the
badges of her profession. For this was the New York office of
Gerry Carlyle, grim huntress of fierce monsters on the
inhospitable planets of the solar System, serene and gracious
Mercury, Venus, Saturn, and pretty much everywhere (the "barren rock" they just landed on is Titan):
“Isn’t it incredible how persistent and unconquerable life is?
We find it everywhere, under the most terrible conditions—the
inferno of Mercury, the stewpot of Venus, and crawling under
tons of pressure on Saturn. Now even on this barren rock, a
great civilization evolved. Those Arrhenius spores sure got
around, didn’t they?”
“Every newscast from the Moon, for the last six hours has
had something about these jiggers. From Mercury, the guy
Gerry quirked up an eyebrow. “I've scoured Mercury's
twilight zone twice for life-forms; I've brought back the only
living things ever seen by man on the surface of Mercury. I
even went over the dark side once.”
“These animals come from Hotside.”
Venus, the setting for two of the stories:
Strike's eyes clouded. There was truth in Ransom's remarks.
Hunting for the strange little creatures called Murris never had
resulted in anything but trouble since the day Sidney Murray,
co-leader of the first great Venusian exploration party, the
Cecil Stanhope—Sidney Murray Expedition, first set eyes
She remembered now that, during one of her earliest trips,
she had discovered a microscopic Martian spore that in some
respects resembled Von Zorn's Mercurian importation.
“Oh, is that so?” Gerry snapped. “Hollywood on the Moon.
Nine Planets Films, Incorporated. The biggest bunch of
crooked fakers in the System. They duplicate the life-forms I've
captured at the risk of my life—Venusian whips, Jovian
thunderdragons. And how do they do it? They make cheap
robots. Radio-controlled robots at that. That's what gets in my
hair, Tommy. I take all the risks, and they grab the credit and
Strike began to have a nagging little premonition. More
closely than ever, he watched the ceremony. Gerry, as had been
agreed upon beforehand, was to make public her selection of
the monster whose capture was necessary for victory. She
named the dermaphos of Saturn, so-called because, according to
Murray—the great pioneer explorer whose books were
standard texts in every college--the dermaphos’ hide glowed
with a faint phosphorescence. Kurtt, much to Strike’s
increasing uneasiness, was not in least taken aback. Not much
was known about the dermaphos, except from the writings of
Murray and one or two other explorers. They described it as a
relatively large creature and rather rare. Confident in the
ability of her own crew to surmount any and all obstacles,
Gerry had purposely chosen a beast that would be difficult to
capture. But Kurtt was nodding and smiling, perfectly
agreeable. It was a curious phenomenon, and it gave Strike
considerable to think about.
Here Nine Planets Films, Inc. had its headquarters. Here
the interplanetary sagas were plotted and planned by
ingenious script writers. Here the technical experts consulted,
the experimental labs created robot-life-forms and artificial
other-worldly conditions. And here Von Zorn ruled like a czar.
He was the President of Nine Planets and Tony Quade was his
ace man. When Von Zorn was in a spot, when experts said a
picture couldn't be canned, he sent for Quade. And Quade had
always proved the experts wrong.
Quade was the one who got the first four-dimensional films
ever made. He was the daredevil maniac who captured the
spectacularly deadly Plutonian life-forms on celluloid. He even
shot the great Martian Inferno, the hottest SRO grosser in
years. Against her will and without her knowledge, he had once
filmed Gerry Carlyle. After Gerry Carlyle it was only a step to a
Though Quade was worried, he didn't show it.
The Hyclops, native to Ganymede, stands more than twelve
feet high, is terrifyingly covered with hair, and has four arms.
Its three one-eyed heads bear murderous fangs that protrude
from a slobbering, loose-lipped mouth. “Get the eyes,” Gerry
yelped, scurrying to one side. “We haven't any super-explosive
bullets, but—aim at the eyes.”
Jupiter V aka Amalthea, home of the fire-breathing cacus:
“What this strange creature, so inimical, may be, we can
only conjecture, aided by fragmentary notes of space farers
who passed briefly in proximity to Satellite Five, and by
telescopic observations from Io, the next Jovian satellite
outward. These give us a curious picture. Four things we can
say about it. The thing is somewhat saurian or wormlike in
appearance, low on the evolutionary scale. It seems to be of a
sluggish nature, which would be natural considering what a
limited supply of energy-building food elements there must be
on Five. Not more than one has ever been seen at a given time.
And—believe this if you can! The monster breathes fire!
She opened up the volume on Saturn and its satellites,
turned to Titan and quickly flipped the pages. Titan was
extraordinarily rich in minerals of almost every conceivable
type. Only transportation costs prevented mining there. Also,
its atmosphere was breathable, its temperatures apparently
not lethally extreme.
More remarkable, according to Murray’s writings, there was
civilized life on Titan. The cities there had been built with an
amazing genius for metalworking. But Murray’s notes were
sketchy on the subject. It seemed that the inhabitants of Titan
were few in number and difficult to communicate with, though
The fact that highly evolved life existed on the satellite was
not startling. Advanced civilizations had been discovered in at
least three other places in the System. If any nomadic tribe,
gifted with the ability to work in metals, had wandered in from
outer space and decided to locate in the Solar System, it was
only natural for them to select Titan and its wealth of ores.
His voice trailed off as he saw Gerry staring wide-eyed past
him. He turned. Thirty yards away, something new had been
added to the landscape.
A five-foot high Thing covered completely with dark, coarse
hair, tapering to a blunt point from a broad base. It somewhat
resembled a blackly furry bishop, strayed from a gigantic
chessboard. The Thing stood utterly motionless in the
grayness, as they watched. Though apparently without
features, it somehow gave the feeling of watching them in
Almussen's Comet (fictional):
“They're a decadent race. Ages ago they had an entirely
different form, I don't know just what. They've lived on this
comet for unimaginable eons. They evolved along lines totally
alien to ours, reached the summit of their culture, and began to
slide back. This barren body won't support much life. In time,
only seven Proteans were left. They were highly evolved
intellectuals, chained to this barren world because they hadn't
mastered space travel. Know what they did?”
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Pluto, Ganymede, Amalthea, Titan, Triton, and a comet; 12 worlds. Two more candidates, the Moon and an asteroid:
Quade lit a cigar of greenish, aromatic Lunar tobacco.
It is not clear if the "lunar tobacco" plants are native to the Moon. By the way, there is also mention of "Venusian tobacco":
It was taking place in the New York offices of the London
Interplanetary Zoo, on the top floor of the tremendous Walker
Building. The suite was built of the finest modern materials
and equipped with all the comforts science could devise.
Vacuum-brik walls shut out noise. There were mineral fluff
insulation, Martian sound-absorbent rugs, plastic bodycontour
furniture, air conditioning. The press of a button
brought iced drinks or lighted cigarettes of aromatic Venusian
tobaccos through a recess in one wall.
The rest of these examples are from Henry Kuttner's Tony Quade story "Hollywood on the Moon", with quotations taken from the (probably abridged) 1949 reprint. Gerry Carlyle does not appear in this story, but it's set in the same Solar System, and she is mentioned, so I guess it counts. Here is more about that lunar tobacco (Startling Stories, July 1949, p. 114):
Von Zorn took out a cigar, made from the aromatic, greenish tobacco grown on the Moon and cut it carefully. "I've trouble enough without you making it worse," he growled. "Our last Venusian picture is flopping and we invested over a million in it. That blasted Carlyle woman's blown it sky-high."
"Yeah, the catch-'em-alive dame. We pay out half a million to the biological labs to create duplicates of Venusian animals and now there aren't any audiences because Gerry Carlyle's brought back the real thing." He lapsed into a stream of fluent profanity.
The Silver Spacesuit (on the Moon) serves a delicacy (presumably native) called Moontruffles (SS, July 1949, p. 112):
"Eh?" Quade stared, and then glanced up as a waitress glided up in her tiny gilded autocar. "I'm not hungry, thanks. Wait a minute. Yes, I am. I've got a long ride ahead. Double order of ham and eggs."
The girl looked shocked and made a feeble attempt to suggest Moontruffle salad instead but Quade waved her away and turned back to Gregg.
An old theory about lunar habitability (SS, July 1949, p. 111):
The Moon is egg-shaped. The larger part is turned perpetually toward the Earth but the smaller end is scooped out into a vast crater, whence volcanic activity in some long past eon had blown a fragment as large as the asteroid Vesta. Within this great hollow are an atmosphere, life, great buildings and studios—Hollywood on the Moon!
1036 Ganymed, an asteroid, spelled "Ganymede" in the story (SS, July 1949, pp. 111-112):
"Well, what can we do?"
"Jupiter's moon? It's too far."
"No, you sap, the asteroid Ganymede. It'll be at perihelion in a few days and that'll bring it within the orbit of Mars, close enough for us. We can't use Eros. After the ether eddy hits it there won't be any Eros. We'll have to put up a set at Ganymede's pole and film the explosion from there. It'll be a rush job but we can make it before the deadline."
And the natives are intelligent (SS, July 1949, p. 123):
"But—but—Ganymede isn't inhabited by intelligent life! Not over the eighth level, anyway."
"Sure it is," the agent interrupted. "This little fellow here is probably smarter than you are." He indicated the bouncer. "He doesn't look it, but he's just over the eighth level. Mr. Quade called me in and wanted an intelligence test made. And it turned out he was right.
"Ganymede is already inhabited by these jiggers—which are over the eighth level of intelligence—so the asteroid belongs to them and Washington says so. And I'll bet neither you nor Sobelin wants to buck the Government."