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Action Comics #26 cover
Cover: Wayne Boring

Action Comics #26

Jul 1940 · DC · 0.10 USD
📊 ~37,489 copies sold its debut month
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🏆 Favorite Mini-Series (2005)

In "Professor Cobalt's Clinic," Zatara and his companion Tong venture into the frozen north on a perilous quest to locate the legendary Jagtooth Gold Mine. At a remote cabin ravaged by illness, Zatara uses his wits and compassion to aid the desperate inhabitants, uncovering whispers of a fierce guardian named Tony—and a long-lost claim tied to Henri Jardine. Written by Gardner Fox and illustrated by Fred Guardineer, this 1940 adventure blends mystery and daring, with Wayne Boring's striking cover capturing the icy tension of the journey.

Contains 7 stories
Professor Cobalt's Clinic
12.88 pp · Superhero
TommyLittle MaryDr. WortingtonProfessor Clarence Cobalt (villain)Grafton (villain)

In "Professor Cobalt's Clinic," the eccentric inventor Professor Cobalt runs a mysterious medical clinic whose bold claims land him in trouble with the Daily Planet—especially after he confronts editor George Taylor with alarming intensity. When George enlists Clark Kent and Lois Lane to investigate the clinic's dubious practices, they find themselves drawn into a case that blurs the line between quackery and something far stranger.

Trapped in the Snow
6 pp · Adventure
Pierre

In "Trapped in the Snow," Pep and his friend Pierre find themselves cut off by a brutal blizzard during a hunting trip in Saskatchewan, forced to push through endless snow and freezing winds to reach the next outpost before another storm cuts them off completely. The story captures the raw tension of survival in the wild, where every step could mean the difference between safety and disaster.

Rescued
4 pp · Historical
Captain CourtneyJeanneCaptain Ruff's brother (villain)

In a tale from the early days of superhero comics, the Black Pirate finds himself stranded in a shark-filled sea before being rescued by Captain Courtney’s ship. After docking in Savannah, Jon Valor rides out alone and reunites with his childhood friend Jeanne at an inn—only to be interrupted that night by a bearded stranger demanding the pirate’s capture.

Ingrid Svenson's Inheritance
6 pp · Adventure
Ingrid SvensenNew Guinea natives

In "Ingrid Svenson's Inheritance," a restless Gunner stumbles upon a tearful Ingrid Svenson in a California diner, drawn into a daring quest when she reveals her father’s final wish: retrieve rare pearls from the summit of Devil Mountain in New Guinea. With the Three Aces at her side, Gunner must navigate treacherous terrain and uncharted dangers to help Ingrid claim her inheritance—no easy feat when the mountain itself seems to guard its secrets.

Introducing "Miss X"
10 pp · Adventure
Miss X (introduction)Special Prosecutor MaloneyJ. Vander WallaceLefty

In the shadow of wartime intrigue, Tex and Bob—once adrift after Gargantua T. Potts joined the French Army—find their dull days upended by a cryptic threat and a mysterious new ally. With prosecutor Maloney pressing them into service, they dive into a web of rackets, guided by the enigmatic Miss X, whose true motives remain as elusive as her identity.

Claim Jumpers
6 pp · Adventure
Marion TrentJames TrentVillains: Jacques Frontenacthe "devil wolf"

In "Claim Jumpers," a chance encounter in New York City pulls Clip into an urgent journey with Marion Trent, who’s racing to reach her father’s remote cabin in the Hudson Bay. With Jacques Frontenac and his spies hot on their trail, the pair must outwit danger across rugged terrain—where every mile brings them closer to a hidden fortune, and greater peril.

The Jagtooth Gold Mine
11 pp · Adventure
TongAnnette DevereFrancois DevereHenri Jardine (flashback)Tony

In the frozen north, Zatara and Tong search for the legendary Jagtooth Gold Mine, commissioned by his friend Henri Jardine. After healing a plague-stricken cabin’s inhabitants, Zatara learns the mine is guarded by a fierce man named Tony—someone he must face to fulfill his mission.

ComicBooks.com Value

Our Model is In Beta
Raw (Good) $564
CGC 9.0 · 1 in census $7,568*
CGC 8.5 · 1 in census $5,284*
CGC 8.0 · 4 in census $4,144
CGC 7.5 · 5 in census $3,426
CGC 7.0 · 4 in census $2,819
CGC 6.5 · 5 in census $2,440
Show all 18 grades
CGC 6.0 · 4 in census $2,038
CGC 5.5 · 8 in census $1,705
CGC 5.0 · 5 in census $1,071
CGC 4.5 · 4 in census $1,071*
CGC 4.0 · 3 in census $1,071*
CGC 3.5 $1,048
CGC 3.0 · 7 in census $770
CGC 2.5 · 4 in census $770
CGC 2.0 · 5 in census $649
CGC 1.5 · 2 in census $497*
CGC 1.0 · 3 in census $453
CGC 0.5 · 4 in census $326*
* estimate — limited direct-sales data at this grade
Our model’s value — refined as new sales data arrives · CGC census counts shown where available

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Cast · 13 characters

Full credits

artist, inker Fred Guardineer
cover pencils, inks Wayne Boring

Reprints

↩ Reprints Superman #5 (1940)

Reprinted in Superman in Action Comics #1 (1993), Superman: The Action Comics Archives #2 (1998), The Superman Chronicles #4 (2008), Superman: The Golden Age Omnibus #1 (2013), Superman: The Golden Age #2 (2017)

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