1977 Pocket Ed Soyka Wilhelm

When the Late Sweet Birds Sang - Kate Wilhelm, originally uploaded by Cadwalader Ringgold.

1973 Popular Library Bova

Forward in Time - Ben Bova, originally uploaded by Cadwalader Ringgold.

DAW Jack Gaughan Phillifant

Genius Unlimited - John T. Phillifant, originally uploaded by Cadwalader Ringgold.

Ace Bart Forbes Farmer

Behind The Walls of Terra - Philip Jose Farmer - cover artist Bart Forbes, originally uploaded by Cadwalader Ringgold.

Ballantine Richard Powers Van Vogt

Slan - A.E. van Vogt, originally uploaded by Cadwalader Ringgold.

1964 Ace Emshwiller Van Vogt

World of Null-A - A.E. Van Vogt, originally uploaded by Cadwalader Ringgold.

Permabook Van Vogt

War Against the Rull - A.E. Van Vogt, originally uploaded by Cadwalader Ringgold.

Doubleday VanVogt

Rogue Ship - A.E. vanVogt, originally uploaded by Cadwalader Ringgold.

1962 Ace Valigursky Norton

Sea Siege - Andre Norton, originally uploaded by Cadwalader Ringgold.

1978 Macmillan Powers Strugatsky

strugatsky, originally uploaded by paynith.

1963 Ace Jack Gaughan Norton

Witch World - Andre Norton, originally uploaded by Cadwalader Ringgold.

1964 Ace Valigursky Norton

Plague Ship - Andre Norton, originally uploaded by Cadwalader Ringgold.

1955 Ace Valigursky Norton

Stars Are Ours - Andre Norton, originally uploaded by Cadwalader Ringgold.

Ace Emshwiller Norton

Sargasso of Space - Andre Norton - Andrew North - Emshwiller, originally uploaded by Cadwalader Ringgold.

1965 Ace Morrow Norton

Ordeal in Otherwhere - Andre Norton, originally uploaded by Cadwalader Ringgold.

Ace Ed Emshwiller Norton

Defiant Agents - Andre Norton - Ed Emshwiller, originally uploaded by Cadwalader Ringgold.

Doubleday Donald Crews Ann Crews Heinlein

Three by Heinlein - The Puppet Masters - Waldo - Magic, Inc - Robert Anson Heinlein - cover by Donald Crews , Ann Crews, originally uploaded by Cadwalader Ringgold.

Heinlein

Orphans of the Sky - Robert A. Heinlein, originally uploaded by Cadwalader Ringgold.

1960 Signet Kossin Heinlein

Beyond This Horizon - Robert A. Heinlein, originally uploaded by Cadwalader Ringgold.

Signet Paul Lehr Heinlein

Door into Summer - Robert A. Heinlein - cover by Paul Lehr, originally uploaded by Cadwalader Ringgold.

Avon Lehr Heinlein

Podkayne of Mars - Robert A. Heinlein, originally uploaded by Cadwalader Ringgold.

1959 Signet Meltzoff Heinlein

Revolt in 2100 - Robert A. Heinlein, originally uploaded by Cadwalader Ringgold.

Signet Meltzoff Heinlein

Day After Tomorrow [original title Sixth Column]- Robert A. Heinlein, originally uploaded by Cadwalader Ringgold.

Bradbury

Twice 22 - Golden Apples of the Sun & A Medicine for Melancholy by Ray Bradbury, originally uploaded by Cadwalader Ringgold.

1960 Ballantine Mugnaini Bradbury

Fahrenheit 451 - Ray Bradbury, originally uploaded by Cadwalader Ringgold.

1966 Ace Kelly Freas Zelazny

Dream Master - Roger Zelazny - 1st edition, originally uploaded by Cadwalader Ringgold.

1970 Ace Morrow Zelazny

This Immortal - Roger Zelazny, originally uploaded by Cadwalader Ringgold.

1977 Dell Dick Zelazny

Deus Irae - Philip K. Dick, originally uploaded by Cadwalader Ringgold.

Doubleday Pohl

The Tenth Galaxy Reader - edited by Fredrik Pohl, originally uploaded by Cadwalader Ringgold.

Ballantine Dean Ellis Pohl Kornbluth

Wolfbane - Frederik Pohl and C.M. Kornbluth, originally uploaded by Cadwalader Ringgold.

1961 Ballantine Powers Pohl

Turn Left at Thursday - Fred Pohl, originally uploaded by Cadwalader Ringgold.

1963 Bantam Glanzman Brown

Honeymoon In Hell - Fredric Brown, originally uploaded by Cadwalader Ringgold.

John Malek

No Mind of Man - Original Novellas of Science Fiction - editior Robert Silverberg - cover artist Jordan Malek, originally uploaded by Cadwalader Ringgold.

1962 Ace Silverberg

Next Stop the Stars - Robert Silverberg, originally uploaded by Cadwalader Ringgold.

1962 Ace Valigursky Silverberg

Seed of Earth - Robert Silverberg, originally uploaded by Cadwalader Ringgold.

1964 Ace Knox Silverberg

One of our Asteriods Is Missing - Calvin M. Knox aka Robert Silverberg, originally uploaded by Cadwalader Ringgold.

1961 Ace Emshwiller Leiber

The Mind Spider - Fritz Leiber, originally uploaded by Cadwalader Ringgold.

1964 Ballantine abbett Leiber

The Wanderer Fritz Leiber, originally uploaded by Cadwalader Ringgold.

1962 Berkley Powers Leiber

Gather Darkness - Fritz Leiber cover by Powers, originally uploaded by Cadwalader Ringgold.

1964 Ballantine Powers Leiber

A Pail of Air - Fritz Leiber, originally uploaded by Cadwalader Ringgold.

1966 Ballantine Powers Leiber

Night of the Wolf - Fritz Leiber, originally uploaded by Cadwalader Ringgold.

1974 DAW George Barr Leiber

Book of Fritz Leiber - cover George Barr, originally uploaded by Cadwalader Ringgold.

Clarke cover by Hal Siegel

Rendezvous with Rama - Arthur C. Clarke cover by Hal Siegel, originally uploaded by Cadwalader Ringgold.

1956 Ballantine Powers Clarke

Reach for Tomorrow - Arthur C. Clarke, originally uploaded by Cadwalader Ringgold.

Signet Clarke

Other Side of the Sky - Arthur C. Clarke, originally uploaded by Cadwalader Ringgold.

1960 Signet Lehr Clarke

Island in the Sky - Arthur C. Clarke, originally uploaded by Cadwalader Ringgold.

1963 Panther Van Vogt

Destination: Universe!, originally uploaded by mekon.

Avon Anthony

Rings of Ice - Piers Anthony, originally uploaded by Cadwalader Ringgold.

1973 Berkley Lehr Anthony

Prostho Plus - Piers Anthony, originally uploaded by Cadwalader Ringgold.

Pyramid Anthony

SOS the Rope - Piers Anthony, originally uploaded by Cadwalader Ringgold.