60's short story where siblings find in mechanical toy that emits light
114536
Story about earth children playing with alien toys. Who wrote it?
64745
Short story where an alien convinces a human to exchange consciousness with it
142581
Short story describing an alien invasion where humans are the invaders
98562
Story about spaceship and a tool
99076
Short story (maybe two in the same collection) about Alien education versus Earth
15392
Trying to remember story or novel with a non-functioning assassin robot
31406
Short story about genius kids who disappear and run into trouble in another dimension?
139418
Looking for a short story about an insect-like alien captured by humans on its own planet
39377
Trying to find a story about an immortal little girl
57115
Can anyone help me identify a story about kids with silver blood?
30721
Childrens sci-fi story about space travelling family, racist rabbits, and a utilitarian computer?
113857
A mutation-themed short story from the 60s or 70s
73923
Very old Matrix-like short story, based on chemicals released into the air, pre-computer
76528
Short story where a scientist uses a time-machine to evolve mice with wings
137668
Fantasy novel about kid who controls magic through coin changer device
132772
Short story involving pieces of orange glass that seek out each other and defend themselves with heat
97540
Looking for a Pre-1975, young adult, sci-fi, colored circle dimension crossing