This series of anthologies was published in the 1980s and was a retrospective of the best stories from years gone by as picked out by Isaac Asimov & Martin Greenberg (I possibly unfairly have the impression that Greenberg probably did most of the legwork, then Asimov made final decisions & wrote quirky little intros - no evidence for that tho).
This is the middle volume of Isaac Asimov's autobiographical look at the science fiction stories from the 1930s that influenced him. No absolute shockers here and I enjoyed reading all of the stories - they still suffer from the various -isms of the time but the sins are more of omission than commission which is a step in the right direction. I think my favourite would be "Sidewise in Time".
The Golden Age of Science Fiction is a phrase that commonly has two definitions - the first of these is the era when Campbell was editing Astounding Stories and the writers included people like Isaac Asimov. The other definition is that the golden age of science fiction is 12. That the stories that you read around that sort of age when you're just discovering your own tastes in fiction are the ones that stick with you through your life.