Later

Robert Heinlein soon found that everything that he wrote did not fit into a single Future History nor did it need to. However, since one of the features that we appreciate in any future history series is consistent internal cross referencing, it is necessary to be clear about whether any particular story belongs to such a series.

"Star Ship" could fit into Poul Anderson's Psychotechnic History in the same period as The Peregrine which is a few centuries later than "Gypsy." Then the Galactic Coordinators become the Coordination Service and the Galactic civilization becomes the Stellar Union.

And that is all for now because I am about to go out for the rest of the evening. Keep rereading Poul Anderson.