All 7 books by Isaac Asimov
Here's all I've got from Isaac Asimov. I've read 3 books.
Isaac Asimov

Forward the Foundation
by Isaac Asimov
Spectra, 1994
Spectra, 1994

Foundation's Edge
by Isaac Asimov
Spectra, 1991
Spectra, 1991

Prelude To Foundation
by Isaac Asimov
Spectra, 1989
Spectra, 1989

Foundation and Earth
by Isaac Asimov
Spectra, 1986
Spectra, 1986

Second Foundation
by Isaac Asimov
Spectra, 1953
Spectra, 1953

Foundation and Empire
by Isaac Asimov
Spectra, 1952
Spectra, 1952

Foundation
by Isaac Asimov
Random House, 1951
Random House, 1951