There's some stuff in there for everyone I suspect. For example, I know I'd be interested in
The Traveller Adventure, his copy of
Traveller: 2300, his
Dangerous Journeys material, and his copy of
DC Heroes. That said, I've got some questions and comments.
The FASA Traveller adventures are rather difficult to come across. Same thing with the Gamelords and Paranoia Press Traveller stuff.
Your copy of the Traveller Book, is it hardcover or softcover? If hardcover, is the dustjacket present and intact? This will affect the value.
Book 5: High Guard: is it a revised edition (notation in the book regarding pages 17-53 being changed)? Versions without the revision notice are more valuable.
Regarding your copy of Supplement 5: Lightning Class Cruisers, where is the Azhanti High Lightning game that goes with it? Supplement 5, with the exception of the first ten copies (usually numbered, a standard
GDW practice), was never released separately.