On the afternoon of Saturday, October 4th, 1975, having just turned thirteen years old a few weeks before, I rode my bicycle about 2 1/2 miles to the nearest bookstore to my house that sold science fiction books--the long-defunct Books & Friends in Oakton, VA. I know this not because I remember the event, but because I wrote it in the back of a paperback copy of "The Past Through Tomorrow," an 830-page collection of Robert Heinlein's "Future History" stories. What I do remember is that I didn't start reading the book right away, but got absorbed in it the next year during a long family car trip from Virginia to Louisiana. This book, along with some "Archie" and "Superman" comics, helped make the trip bearable for me.
Virtually all the stories in this collection were written between 1939 and 1949, with a couple of them dating from, or having been revised, about ten years later. Since the stories appear in "chronological" order (from the point of view of Heinlein's telling of history), but they were not written in that order, one can't help but conclude that Heinlein had an outline of his history already in mind 1939; and indeed this is confirmed in the introduction by Damon Knight, which quotes one of Heinlein's editors writing in February 1941: "...Heinlein's science fiction is laid against a common background of a proposed future history of the world and of the United States. Heinlein's worked the thing out in detail...he has an outlined and graphed history of the future with characters, dates of major discoveries, etc., plotted in." Indeed, a version of this graph is reproduced in the book. What astounds me is that this was a work of imagination almost equivalent to Tolkien's history of Middle Earth, and yet it is not nearly so well known. That seems a shame to me.
The stories begin with present-day (that is, 1939) America, and the invention of a machine that can tell how long someone is going to live ["Life-Line"]. In retrospect this story almost looks like it doesn't belong in the collection, since the machine is destroyed shortly after it is unveiled, and its inventor Dr. Pinero is killed. Only much later, in the final story, does the main character refer back to the machine and to Pinero, making a nice closure for the reader.
There is a stately progression through the short stories, which tell of the invention of moving roadways between American cities ["The Roads Must Roll," "Blowups Happen"]. These stories don't have a major impact on the rest of the history, but the roads are mentioned in passing in later stories.
Then the real meat of the timeline gets started with what I call the Harriman Cycle--stories about space pioneer Delos David Harriman--that document man's first steps into space, landing on the moon, and establishment of permanent lunar settlements (all done by private companies, I'll add, and not by governments). These stories are "The Man Who Sold the Moon," "Delilah and the Space Rigger," "Space Jockey," and "Requiem," by the end of which travel between Earth and bases on the moon was, if not commonplace, more common that Space Shuttle launches at the height of that program.
The series continues with "The Long Watch," "Gentlemen, Be Seated," "The Black Pits of Luna," "'It's Great To Be Back!'," "--We Also Walk Dogs," and "Searchlight." These stories all describe life on the Moon, politics between Earth and the cities on Luna, and the evolving technology of the late 1900s and early 2000s, as Heinlein saw it (boy, don't I wish).
Man moves further afield in "The Green Hills of Earth" and "Logic of Empire," which tell of human settlements on Mars and Venus--both of which worlds have indigenous life. So too, one could say, does the Moon by now, with whole generations of humans being born and living their lives there, as shown in "The Menace From Earth."
The progression of civilization--in particular, American civilization, since other nationalities are rarely mentioned in any of the above stories--into space seems to be abruptly interrupted with a story that, at first read, doesn't seem to belong in this collection at all. "'If This Goes On--'" is the tale of an American theocracy ruled by a Prophet from the city of New Jerusalem (Kansas City, I think). Only slowly does it become clear to the reader that the US suffered a sort of coup around 2016 and this new government was set up, with all the trappings of a heaven on Earth but in reality a police state very similar to Nazi Germany or Soviet Russia (which, considering the story was written in 1940, it was not prescient per se but extremely timely and shows that Heinlein was acutely aware of developments and conditions across the world). The story deals with events that would later be incorporated into the collection "Revolt in 2100," which is about when it takes place. SPOILER ALERT: The Prophet is overthrown in this story, and a new government set up which is clearly descended from the old US Republic, but is a more Utopian-minded form.
Throughout "'If This Goes On--'" and the following story, "Coventry," the new society in America is examined in some detail but barely any mention is made of other countries, Luna, or the colonies on Mars and Venus. Space travel appears to be banned by the Prophet and all traces of it expunged from the history books. This is explained to a small degree in "Methuselah's Children," the final story in the collection and the first appearance of the famous (and immortal) character Woodrow Wilson Smith, aka Lazarus Long.
I didn't mean for this review to be a detailed explication of Heinlein's Future History, which is a good thing because I've gone on too long already. There are plenty of scholarly discussions of Heinlein's work, and this collection in particular, online--along with descriptions of stories he meant to include but never wrote, stories that were written but left out, and so on. Let me just say in closing that if you are a Heinlein fan and want to immerse yourself in the universe that seems to have been his main playground of imagination, get a copy of "The Past Through Tomorrow" and dive in. Some of the stories are a little dated in their language and social mores by today's standards, but remember when they were written and enjoy the genius of the man who was able to project the technology and society of 1940s America and project it, plausibly, centuries into the future.