The stories are arranged chronologically from 1941 to 1965 and there's an introduction by Barry N. Malzberg.
A lot of his stories are set in his future and a surprising number of them have some accuracy. There's a fair amount of consistency (New Albuquerque is on Mars whenever it's mentioned), and a lot of the stories are very short. Near the end, they were single pages and I thought maybe they were for a particular magazine, but no -- I checked in the ISFDB.
This is kind of a long book for people who don't normally read shorts, but they might like it anyway. I think people who read shorts would definitely like it.