Rendezvous with Rama

Ringworld

Larry Niven

1970

Covers from OpenLibrary

Childhood's End

Arthur C. Clarke

1953

Covers from OpenLibrary

The Moon is a Harsh Mistress

Robert A. Heinlein

1966

Covers from OpenLibrary

The Mote in God's Eye

Larry Niven

1974

Covers from OpenLibrary

Gateway

Frederik Pohl

1977

Covers from OpenLibrary

Eon

Greg Bear

1984

Covers from OpenLibrary