_All our Yesterdays_ by Harry Warner jr. tells the story of science fiction fandom (the enthusiast circles around the genre) of the 40ies. The story is one of very talented and passionate people, often quite young, who believed in the genre and technology and science, especially space exploration. It also chronicles their strivings to organise and express themselves, as well as som in-fighting. One thing that strikes me is how like itself fandom seems to be, although I live in another country than the US and my father was born in the 40ies, there are a lot of things here that I, as a modern science fiction fan, can relate to. _All our Yesterdays_ is also touching in places when it comes to the real world intruding on the world of fandom: young fans who join the armed and sometimes fall in combat. This book is illustrated with fascinating photographs. An obligatory read for fans interested in the history of fanzines and fandom.