Valdemar

Well, I went on a Mercedes Lackey kick and read all of the Valdemar books that I own (by trilogy if there is one but in no other order they are):

Arrows of the Queen, Arrow's Flight, Arrow's Fall

Take a Thief

Exile's Honor

By the Sword

Winds of Fate, Winds of Change, Winds of Fury

Storm Warning, Storm Rising, Storm Breaking

Owlflight, Owlsight, Owlknight

Magic's Pawn, Magic's Promise, Magic's Price

The Oathbound, Oathbreakers, Oathblood

The Black Gryphon, The White Gryphon, The Silver Gryphon

Brightly Burning

I also read The Heir of Night by Helen Lowe and Genesis by Paul Chafe.