Originally Posted by sassanik
Was not able to find Gordon Dickson's Dragon book, nor Robert Don Hughes, though did find their wikipedia info.
Oh and I have also read E.E. Knights Dragon Avenger series.
Unfortuanately they do not seem to be available in e-book form. If you do not mind reading them in dead tree/pbook form
you can order them here or haunt your favorite used bookstores.