Comparisons

Recent posts (here and here) have compared SM Stirling's Draka History with Poul Anderson's:

History of Technic Civilization;
The Corridors Of Time;
"Eutopia";
"The House of Sorrows";
"Delenda Est";
"Amazement Of The World."

("Delenda Est" was the culmination of the original Time Patrol collection whereas "Amazement Of The World" is the culmination of the Time Patrol novel.)

(i) Technic Civilization is a fictitious future, more specifically a future history;

(ii) The Corridors Of Time, covering past, present and future, is a time travel novel set in an immutable timeline;

(iii) the Time Patrol, also covering past, present and future, is a time travel series set in a mutable timeline where divergent histories must be prevented;

(iv) "The House of Sorrows" is a short story set in a single divergent history;

(v) the Draka History is a tetralogy set in a divergent history - which I have yet to read to its conclusion;

(vi) "Eutopia" is a short story about travel between divergent histories.

Thus, six works by two authors present a conceptual sequence from future history to time travel to alternative histories to travel between alternative histories. As I have previously commented about Poul Anderson's works, there is a systematic exploration of every possibility: space, time, times and timelines.

Addendum, 6 Oct, ' 15: Including a few more works lengthens this sequence. Thus:

(vi) Stirling's Conquistador is a novel about regular travel between two divergent histories and the discovery of a third;

(vii) "Eutopia" is about regular travel between many alternative histories;

(viii) three works by Anderson feature a meeting place between alternative histories.

Again, we get the impression that the authors have ransacked every possibility.