1954 Dell Powers Tucker

The Long Loud Silence (1954), originally uploaded by admiral.ironbombs.

1956 Ace Norton

Ace D164a, originally uploaded by uk vintage.

1974 Norway Haars Vonnegut

Kurt Vonnegut: Sirenene på Titan, originally uploaded by svennevenn.

1979 Pocket Podwil Van Vogt

Renaissance by A.E. Van Vogt. Pocket Books 1979. Cover artist Jerome Podwil, originally uploaded by pulpcrush.

1965 Ace Podwil Cummings

Tama of the Light Country by Ray Cummings, originally uploaded by My Love Haunted Heart.

1967 Ace Podwil Coulson

Juanita Coulson - Crisis on Cheiron - Ace Double H-27 - cover artist Jerome Podwil, originally uploaded by Cadwalader Ringgold.

1976 Sphere Wolf

Killerbowl, originally uploaded by NRJP.

1977 Fawcett Carr

Cirque - Terry Carr, originally uploaded by Cadwalader Ringgold.

1963 Lancer Emshwiller

Larry T. Shaw (ed) - Great Science Fiction Adventures (Lancer 1963), originally uploaded by horzel.

1959 Ace Valigursky Norton

Secret of the Lost Race, originally uploaded by McClaverty.

1960 Ace Valigursky Norton

The Sioux Spaceman, originally uploaded by McClaverty.

1974 Ace Ellis Norton

Sioux Spaceman by Andre Norton, originally uploaded by newmexico51.

1959 Ballantine Powers Maine

"Fire Past the Future" by Charles Eric Maine (1959 Ballantine edition); cover by Richard M. Powers., originally uploaded by CoffeeInSpace.

1959 Ballantine Powers Maine

"The Tide Went Out" by Charles Eric Maine (1959), originally uploaded by CoffeeInSpace.

1965 Berkley Powers Kornbluth

Syndic - C.M. Kornbluth, originally uploaded by Cadwalader Ringgold.

Bester

1965 Ace Podwil Chandler

1985 Sphere Goodfellow Zelazny

Bantam Lehr Sheckley

1961 Ace Emshwiller Bulmer

1965 Bantam Lehr Dickson

1964 Ballantine Abbett Farmer

Penguin Griffiths Wyndham

1974 Arrow Foss Blish

1964 Berkley Powers Leinster

1972 Ace Meltzer Sturgeon

1978 Berkley Powers Leiber

1977 Ace Punchatz Silverberg

Robert Silverberg - Next Stop the Stars, a photo by citizen3xx24j on Flickr.

1953 Ballantine Powers Clarke

Ballantine 33, originally uploaded by uk vintage.

Arrow Brunner

The Sheep Look Up / John Brunner, originally uploaded by Sharaz Jek.

1961 Ballantine Powers Aldiss

Untitled, originally uploaded by alittleblackegg.

1967 Ace Gaughan Norton

The X Factor, originally uploaded by McClaverty.

1980 Del Rey Simak

The Visitor - Clifford D. Simak, originally uploaded by Cadwalader Ringgold.

1963 Four Square Pohl

Untitled, originally uploaded by alittleblackegg.

1968 French Bradbury

Ray Bradbury: Chroniques martiennes, originally uploaded by alexisorloff.

1955 Ace Valigursky Van Vogt

Untitled, originally uploaded by alittleblackegg.

1961 Ballantine Powers Anderson

1976 NEL Jones Heinlein

Starman Jones by Robert Heinlein. NEL 1976. Cover artist Pauline Jones, originally uploaded by pulpcrush.

1963 Ace Gaughan Dick

The Game-Players of Titan (Philip K. Dick), originally uploaded by martinprine.

1961 Dutch Doeve Wyndham

Prisma 594 _ 1961, originally uploaded by uk vintage.

1962 Dutch Doeve

Science Fiction Verhalen (Prisma 1962), originally uploaded by horzel.

1965 Dutch Doeve Asimov

Isaac Asimov - Spionage in de Ruimte (Het Spectrum 1965), originally uploaded by horzel.

1975 DAW Gaughan Dickson

R-Masters - Gordon R. Dickson - cover artist Jack Gaughan - reviewed, originally uploaded by Cadwalader Ringgold.

Tower Williamson

Jack Williamson - The Not-Men, originally uploaded by citizen3xx24j.

1961 Crest Wyndham

John Wyndham / The Day Of The Triffids, originally uploaded by micky the pixel.

1961 Ace Emshwiller Bulmer

Beyond the Silver Sky (1961), originally uploaded by admiral.ironbombs.

1978 Sphere McKie Dick Zelazny

Philip K Dick & Roger Zelazny - Deus Irae, originally uploaded by citizen3xx24j.

1957 Avon Sussman Lewis

Avon T 157 _ Art Sussman, originally uploaded by uk vintage.

1966 Corgi Knight

Damon Knight - In Deep (Corgi 1966), originally uploaded by horzel.

1952 Panther Tubb

Panther Tubb, originally uploaded by uk vintage.