Time Traveler YA Trilogy Identification
55114
Book about a group of kids abducted from various historical disasters and then live in a time loop of 9/11 have to stop neo-nazis
48487
Book series about time travel from future to distant past, psychic powers?
150922
Identification of a sci-fi book or book series based on the description of two alien races
76448
Novel about a replica of earth where history happened slightly differently after the ~1940s
29482
Identification of mid-80s time travel tv show
63545
Identify series of books about a hero chasing a body switching potion between planets
36075
Identifying a short story about time travel and paradoxes
105120
Older fantasy novel with alternate world and musical themes
127337
Late 70s Early 80s Children's SF Book Series
39744
Story with a 3-layered world
115249
Story involving young female space travelling escapee with multiple personalities
126872
70s YA novel about two boys travelling millions of years into the past, meeting a "cynogasaurus" and rival animal-themed caveman tribes
129715
Looking for a book featuring a soldier/marine travelling to a different time/universe
17094
Identity novel, short story or book series... slower than light space battles, time dilation and boardings, several planets
26358
Book about ancient Martian astronauts being the root of modern humanity and time travel
98655
R.A. Lafferty? Story about ship going back in time
100224
Sci-fi book series set in postapocalyptic frozen world with train colors representing class rank