The Comet Kings
New York : Popular Library, 1969. –
127 p. ; 18 cm. – (Popular Library ; 60-2407)
“Trapped in the blazing depths of Halley’s comet, the futuremen battle four-dimensional monsters” — Cover
What was the cosmic terror that swallowed spaceships whole?
One by one the Solar System’s ships were disappearing in mid-space – as if a mighty colossus had grabbed them up and swallowed them whole.
Top agents Joan Randall and Ezra Gurney were sent to investigate. Like the others, somewhere beyond Jupiter, they disappeared.
Captain Future heard the news with shocked horror. Whatever the danger, he had to stop this menacing evil force. Whatever the risk, he had to find lovely Joan Randall – the woman he love …
Book Review

• Lovisi, Gary, “Comet Kings: From Pulps to Paperbacks,” in:   Paperback Parade  No. 1:16-18.  October 1986.

Captain Future’s Challenge
New York : Popular Library, 1969. –
128 p. ; 18 cm. – (Popular Library ; 60-2430)
“The mighty avenger of cosmic evil takes his most daring plunge – towards the raging flames of the sun …” — Cover
CAPTAIN FUTURE FACES FIERY SOLAR DEATH
It was ten o’clock, solar time, when disaster struck. At exactly the same moment, gravium mines on Mercury, Mars and Saturn were totally destroyed by an unidentified army. Without gravium – the life-blood of interplanetary civilization – the system would perish.
Meanwhile, Captain Future struggled on the floor of a moving space craft, his arms and legs bound by steel ropes. He did not know why he’d been captured – only that the system was in grave danger – that he was needed…
As Captain Future was plunged through space, towards a deadly orb of flaming gases – the raging inferno of the sun – he planned his daring escape. It was to be the most dangerous gamble of his life.

 

Captain Future and the Space Emperor
New York : Popular Library, 1969. –
121 p. ; 18 cm. – (Popular Library ; 60-2457) pbk
“A creeping menace invades the galaxy – and Captain Future meets his most powerful enemy …” — Cover
MAN OR MUTANT? A LIFE-OR-DEATH QUESTION FOR CAPTAIN FUTURE …
President Carthew was in his office when the monster appeared— a giant, hunched creature, bizarrely hideous …
The President gaped as a guard appeared in the door-way and pointed his weapon at the fanged being.
“Don’t shoot”, Carthew cried, but too late. The beast lay dead on the floor.
Carthew sighed deeply as he confirmed his fears. The corpse on the floor was Sperling, his best secret agent, transformed into this hairy brute by the dread peril that threatened to destroy them all.
Only one man left alive might be able to ward off total doom. The President flashed and emergency call for Captain Future …

Calling Captain Future
New York : Popular Library, 1969. –
144 p. ; 18 cm. – (Popular Library ; 60-2421) pbk.
“Captain Future, Wizard of Science, mighty adventurer, meets his match in a war of solar doom” — Cover
Captain Future -great enemy of evil- is called on to save humanity
James Carthew, President of the Solar System, watched from the government tower, his face lined with worry. Outside thousands of people were demonstrating. Once loyal citizens, they now urged Carthew to yield his power to a diabolic stranger named Dr. Zarro – a being from another mysterious system who had hypnotized the entire population with fear.
Carthews knew that Zarro would surely destroy humanity, but how could he prove it? There was only one man who could – perhaps – help him.
“Calling Captain Future!” The message beeped urgently from the high tower, out across the heavens. “Calling Captain Future!”