Looking for title of book (<1970) about an interdimensional traveler
1890
Children's book with "square triangles" in parallel universe?
141480
Help identifing a book about people exiled to the distant past
127124
Looking for a book about the moon being a spaceship with an AI
143007
Book with travellers, alien artefacts and age reversal
97483
Looking for book: contact with aliens, five different races, mismatched claws, biological imperative to breed
18199
Looking for sci-fi novel I read about humanity finding alien station on orbit of Earth
18858
Looking for a childrens book from the 70s about kids that build a spaceship
100531
Novel about a teleportation device and a con artist alien
142054
Seeking title / author of a story about alien first contact with Earth
134762
SF novel about crashed pilot
82270
Book set in contemporary times about a travel writer who is inducted into the world of the supernatural
50339
Book identification: technologically-enhanced man (1970s/80s YA)
76070
Novel about people living in a virtual reality on a spaceship, only discovering this over time
67824
Book about a boy who travels to a parallel universe to get a book
90544
Need to identitify a short story about an astronaut stranded alone on a planet that houses a strange museum
119198
Looking for title of a sci-fi story about a one-way space journey
89070
Unknown Science Fiction Space Book