@archon @johnsonjeffro There was a very basic list of sources that influenced Traveller back-in-the-day. A group of special characters were listed in Supplement 01 - 1001 Characters (without attribution), and a group of Heroes and Villians in 04 - Citizens of the Imperium (with attribution for both books), and the Dumarest Saga was mentioned there (along with many other sources). But, I get your point :-) You need to read Shannon Appelcline's "The Science Fiction in Traveller".