Prelude to Foundation (Foundation #6) by Isaac Asimov
The Stars, Like Dust (Galactic Empire #1) by Isaac Asimov
Robots and Empire (Robot #4) by Isaac Asimov
The Robots of Dawn (Robot #3) by Isaac Asimov
The Naked Sun (Robot #2) by Isaac Asimov
The Caves of Steel (Robot #1) by Isaac Asimov
The Positronic Man (Robot 0.6) by Isaac Asimov
Robot Visions (Robot 0.5) by Isaac Asimov
Robot Dreams (Robot 0.4) by Isaac Asimov
The Complete Robot (Robot 0.3) by Isaac Asimov
The Complete Stories by Isaac Asimov
I, Robot (Robot 0.1) by Isaac Asimov
Foundation and Earth (Foundation #5) by Isaac Asimov
Foundation's Edge (Foundation #4) by Isaac Asimov
Second Foundation (Foundation #3) by Isaac Asimov
Foundation and Empire (Foundation #2) by Isaac Asimov
Foundation (Foundation #1) by Isaac Asimov
Forward the Foundation (Foundation 0.2) by Isaac Asimov
Pebble in the Sky (Galactic Empire #3) by Isaac Asimov
The Currents of Space (Galactic Empire #2) by Isaac Asimov