The listing, 6 by Isaac Asimov has ended.
The Caves of Steel written in 1953, this copy printed in 1972, it's kind of brittle in the spine, but not falling apart yet.
Asimov's Mysteries, 13 Short stories he wrote in the 50's, this copy printed in 1968, in good shape
Lucky Starr and the Big Sun Mercury, writing at Paul French, written in 1956, this copy printed in 1972, in good shape
Lucky Starr and the Moons of Jupiter, writing as Paul French, written in 1957, this copy printed in 1972, in good condition
Second Foundation, written in 1953, this copy printed in 1987, in very good condition
Foundation and Earth, written in 1986, printed in 1986, the cover on this book has seen better days, but no torn or missing pages.