The Books:
On Basilisk Station (I)
The Honor of the Queen (II)
The Short Victorious War (III)
Field of Dishonor (IV)
Flag in Exile (V)
Honor Among Enemies (VI)
In Enemy Hands (VII)
More Than Honor (3 stories in the HH universe)
Go to The Unofficial David Weber Fan Club Page and check out the Honorpedia. It has lots and lots of information on the characters and things in Honor's universe. However I find that it doesn't have as much information as I would like on treecats so I have supplemented it. Treecats
Links to Other Honor Harrington Pages
